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CVE-2026-52721

Gstreamer1-plugins-bad-free: gstreamer: multiple out-of-bounds reads in pcapparse ipv4/tcp header parsing

5.3 MediumFix available

Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
High
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
High

Exploit likelihood

0.11%Unchanged since Jun 16, 2026
90%50%10%1%

What each source reports

CVE List Score used 5.3

Gstreamer1-plugins-bad-free: gstreamer: multiple out-of-bounds reads in pcapparse ipv4/tcp header parsing

Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.

Record
CVE-2026-52721
CVSS 3.1
5.3 MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H
Weakness
CWE-125
Updated
2026-11-05
EUVDEUVD-2026-36800 5.3

Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.

Record
EUVD-2026-36800
CVSS 3.1
5.3 MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H
Updated
2026-11-05
GitHub AdvisoriesGHSA-9qf3-vv3w-6xw5 5.3

Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element....

Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.

Record
GHSA-9qf3-vv3w-6xw5
CVSS 3.1
5.3 MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H
Weakness
CWE-125
Updated
2026-11-02
NVD 5.3

Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.

Record
CVE-2026-52721
CVSS 3.1
5.3 MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H
Weakness
CWE-125
Updated
2026-11-05
OSVDEBIAN-CVE-2026-52721 5.3

Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.

Record
DEBIAN-CVE-2026-52721
CVSS 3.1
5.3 MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H
Updated
2026-11-06
OSVUBUNTU-CVE-2026-52721 5.3

Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.

Record
UBUNTU-CVE-2026-52721
CVSS 3.1
5.3 MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H
Updated
2026-11-02
Show 7 moreShow less
OSVopenSUSE-SU-2026:21370-1 No score

Security update for gstreamer-plugins-bad

This update for gstreamer-plugins-bad fixes the following issues

  • CVE-2026-12891: unchecked aspect_ratio_idc value used as an array index in the H.266 parser could cause a global out- of-bounds read (bsc#1268872).
  • CVE-2026-12892: 1-byte heap out-of-bounds read in H.264 NAL extension slice parser (bsc#1268971).
  • CVE-2026-14935: webrtcbin accepts remote SDP without a=fingerprint due to inverted presence check (bsc#1271051).
  • CVE-2026-52720: invalid check of total area instead of individual dimensions could trigger a heap out-of-bounds write (bsc#1268406).
  • CVE-2026-52721: crafted PCAP records during IPv4 or TCP header parsing could cause an out-of-bounds read (bsc#1268408).
  • CVE-2026-52722: crafted VMnc stream with large cursor dimensions can overflow signed integer (bsc#1268410).
  • CVE-2026-53701: multi-slice-in-tile partitions without slice index bounds checks could trigger an out-of-bounds write (bsc#1268172).
  • CVE-2026-53702: incorrect loop bound during H.265 SEI message parsing could result in a stack buffer overflow (bsc#1268168).
  • CVE-2026-59692: unvalidated peer certificate Subject DN printed during a DTLS handshake could cause a stack buffer overflow (bsc#1271168).
Record
openSUSE-SU-2026:21370-1
Updated
2026-11-02
OSVSUSE-SU-2026:22752-1 No score

Security update for gstreamer-plugins-bad

This update for gstreamer-plugins-bad fixes the following issues

  • CVE-2026-12891: unchecked aspect_ratio_idc value used as an array index in the H.266 parser could cause a global out- of-bounds read (bsc#1268872).
  • CVE-2026-12892: 1-byte heap out-of-bounds read in H.264 NAL extension slice parser (bsc#1268971).
  • CVE-2026-14935: webrtcbin accepts remote SDP without a=fingerprint due to inverted presence check (bsc#1271051).
  • CVE-2026-52720: invalid check of total area instead of individual dimensions could trigger a heap out-of-bounds write (bsc#1268406).
  • CVE-2026-52721: crafted PCAP records during IPv4 or TCP header parsing could cause an out-of-bounds read (bsc#1268408).
  • CVE-2026-52722: crafted VMnc stream with large cursor dimensions can overflow signed integer (bsc#1268410).
  • CVE-2026-53701: multi-slice-in-tile partitions without slice index bounds checks could trigger an out-of-bounds write (bsc#1268172).
  • CVE-2026-53702: incorrect loop bound during H.265 SEI message parsing could result in a stack buffer overflow (bsc#1268168).
  • CVE-2026-59692: unvalidated peer certificate Subject DN printed during a DTLS handshake could cause a stack buffer overflow (bsc#1271168).
Record
SUSE-SU-2026:22752-1
Updated
2026-11-02
OSVSUSE-SU-2026:22817-1 No score

Security update for gstreamer-plugins-bad

This update for gstreamer-plugins-bad fixes the following issues

  • CVE-2026-12891: unchecked aspect_ratio_idc value used as an array index in the H.266 parser could cause a global out- of-bounds read (bsc#1268872).
  • CVE-2026-12892: 1-byte heap out-of-bounds read in H.264 NAL extension slice parser (bsc#1268971).
  • CVE-2026-14935: webrtcbin accepts remote SDP without a=fingerprint due to inverted presence check (bsc#1271051).
  • CVE-2026-52720: invalid check of total area instead of individual dimensions could trigger a heap out-of-bounds write (bsc#1268406).
  • CVE-2026-52721: crafted PCAP records during IPv4 or TCP header parsing could cause an out-of-bounds read (bsc#1268408).
  • CVE-2026-52722: crafted VMnc stream with large cursor dimensions can overflow signed integer (bsc#1268410).
  • CVE-2026-53701: multi-slice-in-tile partitions without slice index bounds checks could trigger an out-of-bounds write (bsc#1268172).
  • CVE-2026-53702: incorrect loop bound during H.265 SEI message parsing could result in a stack buffer overflow (bsc#1268168).
  • CVE-2026-59692: unvalidated peer certificate Subject DN printed during a DTLS handshake could cause a stack buffer overflow (bsc#1271168).
Record
SUSE-SU-2026:22817-1
Updated
2026-11-02
OSVSUSE-SU-2026:3058-1 No score

Security update for gstreamer-plugins-bad

This update for gstreamer-plugins-bad fixes the following issues

  • CVE-2026-12892: 1-byte heap out-of-bounds read in H.264 NAL extension slice parser (bsc#1268971).
  • CVE-2026-14935: webrtcbin accepts remote SDP without a=fingerprint due to inverted presence check (bsc#1271051).
  • CVE-2026-52720: invalid check of total area instead of individual dimensions could trigger a heap out-of-bounds write (bsc#1268406).
  • CVE-2026-52721: crafted PCAP records during IPv4 or TCP header parsing could cause an out-of-bounds read (bsc#1268408).
  • CVE-2026-52722: crafted VMnc stream with large cursor dimensions can overflow signed integer (bsc#1268410).
  • CVE-2026-53702: incorrect loop bound during H.265 SEI message parsing could result in a stack buffer overflow (bsc#1268168).
  • CVE-2026-59692: unvalidated peer certificate Subject DN printed during a DTLS handshake could cause a stack buffer overflow (bsc#1271168).
Record
SUSE-SU-2026:3058-1
Updated
2026-11-02
OSVSUSE-SU-2026:3125-1 No score

Security update for gstreamer-plugins-bad

This update for gstreamer-plugins-bad fixes the following issues:

  • CVE-2026-12892: 1-byte heap out-of-bounds read in H.264 NAL extension slice parser (bsc#1268971).
  • CVE-2026-14935: webrtcbin accepts remote SDP without a=fingerprint due to inverted presence check (bsc#1271051).
  • CVE-2026-52720: invalid check of total area instead of individual dimensions could trigger a heap out-of-bounds write (bsc#1268406).
  • CVE-2026-52721: crafted PCAP records during IPv4 or TCP header parsing could cause an out-of-bounds read (bsc#1268408).
  • CVE-2026-52722: crafted VMnc stream with large cursor dimensions can overflow signed integer (bsc#1268410).
  • CVE-2026-53702: incorrect loop bound during H.265 SEI message parsing could result in a stack buffer overflow (bsc#1268168).
  • CVE-2026-59692: unvalidated peer certificate Subject DN printed during a DTLS handshake could cause a stack buffer overflow (bsc#1271168).
Record
SUSE-SU-2026:3125-1
Updated
2026-11-02
OSVSUSE-SU-2026:3133-1 No score

Security update for gstreamer-plugins-bad

This update for gstreamer-plugins-bad fixes the following issues

  • CVE-2026-12892: 1-byte heap out-of-bounds read in H.264 NAL extension slice parser (bsc#1268971).
  • CVE-2026-14935: webrtcbin accepts remote SDP without a=fingerprint due to inverted presence check (bsc#1271051).
  • CVE-2026-52720: invalid check of total area instead of individual dimensions could trigger a heap out-of-bounds write (bsc#1268406).
  • CVE-2026-52721: crafted PCAP records during IPv4 or TCP header parsing could cause an out-of-bounds read (bsc#1268408).
  • CVE-2026-52722: crafted VMnc stream with large cursor dimensions can overflow signed integer (bsc#1268410).
  • CVE-2026-53702: incorrect loop bound during H.265 SEI message parsing could result in a stack buffer overflow (bsc#1268168).
  • CVE-2026-59692: unvalidated peer certificate Subject DN printed during a DTLS handshake could cause a stack buffer overflow (bsc#1271168).
Record
SUSE-SU-2026:3133-1
Updated
2026-11-02
OSVSUSE-SU-2026:3299-1 No score

Security update for gstreamer-plugins-bad

This update for gstreamer-plugins-bad fixes the following issues:

  • CVE-2026-12892: 1-byte heap out-of-bounds read in H.264 NAL extension slice parser (bsc#1268971).
  • CVE-2026-52720: invalid check of total area instead of individual dimensions could trigger a heap out-of-bounds write (bsc#1268406).
  • CVE-2026-52721: crafted PCAP records during IPv4 or TCP header parsing could cause an out-of-bounds read (bsc#1268408).
  • CVE-2026-52722: crafted VMnc stream with large cursor dimensions can overflow signed integer payload-size arithmetic (bsc#1268410).
  • CVE-2026-53702: incorrect loop bound during H.265 SEI message parsing could result in a stack buffer overflow (bsc#1268168).
  • CVE-2026-59692: unvalidated peer certificate Subject DN printed during a DTLS handshake could cause a stack buffer overflow (bsc#1271168).
Record
SUSE-SU-2026:3299-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gst-plugins-bad1.0
Debian:12
All versions, plus listed versions
1.22.0-41.22.0-4+deb12u11.22.0-4+deb12u21.22.0-4+deb12u31.22.0-4+deb12u4
Show 45 moreShow less
1.22.0-4+deb12u51.22.0-4+deb12u61.22.0-4+deb12u71.22.0-4+deb12u81.22.1-11.22.10-11.22.3-11.22.3-21.22.4-11.22.7-11.22.8-11.22.9-11.22.9-21.23.1-11.23.2-11.23.90-11.24.0-11.24.1-11.24.1-21.24.1-31.24.1-41.24.10-11.24.10-21.24.10-2+hurd.11.24.10-31.24.11-11.24.11-21.24.11-31.24.12-11.24.12-21.24.12-31.24.2-11.24.2-21.24.2-31.24.2-41.24.3-11.24.4-11.24.4-21.24.5-11.24.6-11.24.7-11.24.8-11.24.8-21.24.9-11.25.1-1
None known
gst-plugins-bad1.0
Debian:13
All versions, plus listed versions
1.26.10-11.26.10-21.26.2-31.26.2-3+deb13u11.26.2-3+deb13u2
Show 37 moreShow less
1.26.2-3+deb13u31.26.3-11.26.4-11.26.5-11.26.5-21.26.6-11.26.6-21.26.6-31.26.6-41.26.6-51.26.7-11.26.7-21.26.8-11.26.9-11.27.1-11.27.2-11.27.50-11.27.90-11.27.90-21.27.90-31.28.0-11.28.1-11.28.1-21.28.1-31.28.2-11.28.2-21.28.3-11.28.4-11.28.5-11.28.5-21.28.6-11.28.7-11.28.7-21.28.8-11.29.1-11.29.2-11.29.2-2
None known
gst-plugins-bad1.0
Debian:14
before 1.28.5-1, plus listed versions
1.26.10-11.26.10-21.26.2-31.26.3-11.26.4-1
Show 25 moreShow less
1.26.5-11.26.5-21.26.6-11.26.6-21.26.6-31.26.6-41.26.6-51.26.7-11.26.7-21.26.8-11.26.9-11.27.1-11.27.2-11.27.50-11.27.90-11.27.90-21.27.90-31.28.0-11.28.1-11.28.1-21.28.1-31.28.2-11.28.2-21.28.3-11.28.4-1
1.28.5-1
gstreamer-plugins-bad
SUSE:Linux Micro 6.2
From an advisory covering 9 CVEs
before 1.26.7-160000.3.1
1.26.7-160000.3.1
gstreamer-plugins-bad
SUSE:Linux Enterprise Server 16.0
From an advisory covering 9 CVEs
before 1.26.7-160000.3.1
1.26.7-160000.3.1
gstreamer-plugins-bad
SUSE:Linux Enterprise Server for SAP applications 16.0
From an advisory covering 9 CVEs
before 1.26.7-160000.3.1
1.26.7-160000.3.1
gstreamer-plugins-bad
SUSE:Linux Enterprise Module for Basesystem 15 SP7
From an advisory covering 7 CVEs
before 1.24.0-150600.4.9.1
1.24.0-150600.4.9.1
gstreamer-plugins-bad
SUSE:Linux Enterprise Module for Desktop Applications 15 SP7
From an advisory covering 7 CVEs
before 1.24.0-150600.4.9.1
1.24.0-150600.4.9.1
gstreamer-plugins-bad
SUSE:Linux Enterprise Module for Package Hub 15 SP7
From an advisory covering 7 CVEs
before 1.24.0-150600.4.9.1
1.24.0-150600.4.9.1
gstreamer-plugins-bad
SUSE:Linux Enterprise Server 15 SP6-LTSS
From an advisory covering 7 CVEs
before 1.24.0-150600.4.9.1
1.24.0-150600.4.9.1
Show 21 moreShow less
Affected packages
PackageAffectedFixed
gstreamer-plugins-bad
SUSE:Linux Enterprise Server for SAP Applications 15 SP6
From an advisory covering 7 CVEs
before 1.24.0-150600.4.9.1
1.24.0-150600.4.9.1
gstreamer-plugins-bad
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS
From an advisory covering 7 CVEs
before 1.22.0-150500.3.34.1
1.22.0-150500.3.34.1
gstreamer-plugins-bad
SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS
From an advisory covering 7 CVEs
before 1.22.0-150500.3.34.1
1.22.0-150500.3.34.1
gstreamer-plugins-bad
SUSE:Linux Enterprise Server 15 SP5-LTSS
From an advisory covering 7 CVEs
before 1.22.0-150500.3.34.1
1.22.0-150500.3.34.1
gstreamer-plugins-bad
SUSE:Linux Enterprise Server for SAP Applications 15 SP5
From an advisory covering 7 CVEs
before 1.22.0-150500.3.34.1
1.22.0-150500.3.34.1
gstreamer-plugins-bad
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS
From an advisory covering 7 CVEs
before 1.20.1-150400.3.29.1
1.20.1-150400.3.29.1
gstreamer-plugins-bad
SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS
From an advisory covering 7 CVEs
before 1.20.1-150400.3.29.1
1.20.1-150400.3.29.1
gstreamer-plugins-bad
SUSE:Linux Enterprise Server 15 SP4-LTSS
From an advisory covering 7 CVEs
before 1.20.1-150400.3.29.1
1.20.1-150400.3.29.1
gstreamer-plugins-bad
SUSE:Linux Enterprise Server for SAP Applications 15 SP4
From an advisory covering 7 CVEs
before 1.20.1-150400.3.29.1
1.20.1-150400.3.29.1
gstreamer-plugins-bad
SUSE:Linux Enterprise Server 12 SP5-LTSS
From an advisory covering 6 CVEs
before 1.8.3-18.21.1
1.8.3-18.21.1
gstreamer-plugins-bad
SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5
From an advisory covering 6 CVEs
before 1.8.3-18.21.1
1.8.3-18.21.1
gst-plugins-bad1.0
Ubuntu:Pro:14.04:LTS
All versions, plus listed versions
1.2.0-3ubuntu51.2.1-1ubuntu11.2.1-1ubuntu21.2.2-1ubuntu11.2.2-1ubuntu2
Show 6 moreShow less
1.2.2-1ubuntu41.2.3-1ubuntu11.2.3-1ubuntu21.2.4-1~ubuntu11.2.4-1~ubuntu1.11.2.4-1~ubuntu1.1+esm1
None known
gst-plugins-bad1.0
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
1.6.0-1ubuntu11.6.1-1ubuntu11.6.2-1ubuntu11.7.1-1ubuntu11.7.1-1ubuntu3
Show 11 moreShow less
1.7.1-1ubuntu41.7.2-1ubuntu11.7.90-1ubuntu21.7.91-1ubuntu11.8.0-1ubuntu11.8.1-1ubuntu0.11.8.2-1ubuntu0.11.8.2-1ubuntu0.21.8.3-1ubuntu0.21.8.3-1ubuntu0.2+esm11.8.3-1ubuntu0.2+esm2
None known
gst-plugins-bad1.0
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
1.12.3-1ubuntu11.12.3-1ubuntu21.12.3-2ubuntu11.12.4-2ubuntu11.12.4-2ubuntu2
Show 8 moreShow less
1.13.1-1ubuntu11.13.91-1ubuntu11.14.0-1ubuntu11.14.1-1ubuntu1~ubuntu18.04.11.14.4-1ubuntu1~ubuntu18.04.11.14.5-0ubuntu1~18.04.11.14.5-0ubuntu1~18.04.1+esm11.14.5-0ubuntu1~18.04.1+esm2
None known
gst-plugins-bad1.0
Ubuntu:Pro:20.04:LTS
All versions, plus listed versions
1.16.1-1ubuntu11.16.1-1ubuntu31.16.1-1ubuntu41.16.1-1ubuntu51.16.1-1ubuntu6
Show 9 moreShow less
1.16.1-1ubuntu81.16.2-1ubuntu11.16.2-1ubuntu21.16.2-2ubuntu11.16.2-2.1ubuntu11.16.3-0ubuntu11.16.3-0ubuntu1.11.16.3-0ubuntu1.1+esm11.16.3-0ubuntu1.1+esm2
None known
gst-plugins-bad1.0
Ubuntu:Pro:22.04:LTS
All versions, plus listed versions
1.18.5-1ubuntu11.18.5-1ubuntu31.20.0-2ubuntu21.20.1-1ubuntu21.20.3-0ubuntu11.20.3-0ubuntu1.11.20.3-0ubuntu1.1+esm21.20.3-0ubuntu1.1+esm3
None known
gst-plugins-bad1.0
Ubuntu:Pro:24.04:LTS
All versions, plus listed versions
1.22.4-1ubuntu11.22.4-1ubuntu21.22.4-1ubuntu41.22.9-2ubuntu11.24.0-1ubuntu3
Show 4 moreShow less
1.24.0-1ubuntu41.24.2-1ubuntu41.24.2-1ubuntu4+esm11.24.2-1ubuntu4+esm2
None known
gst-plugins-bad1.0
Ubuntu:25.10
All versions, plus listed versions
1.26.0-1ubuntu21.26.2-1ubuntu11.26.3-1ubuntu11.26.4-1ubuntu11.26.5-1ubuntu2
None known
gst-plugins-bad1.0
Ubuntu:26.10
All versions, plus listed versions
1.28.2-1ubuntu11.28.2-1ubuntu21.28.4-1ubuntu11.28.4-1ubuntu21.28.6-1ubuntu1
None known
gst-plugins-bad1.0
Ubuntu:26.04:LTS
All versions, plus listed versions
1.26.5-1ubuntu21.27.2-1ubuntu11.27.90-1ubuntu21.28.0-1ubuntu21.28.1-2ubuntu2
Show 4 moreShow less
1.28.1-2ubuntu31.28.2-1ubuntu11.28.2-1ubuntu1.11.28.2-1ubuntu1.2
None known
gstreamer-plugins-bad
openSUSE:Leap 16.0
From an advisory covering 9 CVEs
before 1.26.7-160000.3.1
1.26.7-160000.3.1

History

History
RecordedChangedSources
affectedOSV
affectedCVE List, NVD
factsEUVD
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-52721 is a medium vulnerability (CVSS 5.3) in Red Hat Enterprise Linux 10, published June 15, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.11%, the 1st percentile. Fixed in gst-plugins-bad1.0 1.28.5-1.

References

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Left out here: 49 versions. The JSON record has them.

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