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CVE-2020-25863

In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the MIME Multipart dissector...

7.5 HighFix available

In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the MIME Multipart dissector could crash. This was addressed in epan/dissectors/packet-multipart.c by correcting the deallocation of invalid MIME parts.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

4.92%Up 2.6 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.5

In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the MIME Multipart dissector could crash. This was addressed in epan/dissectors/packet-multipart.c by correcting the deallocation of invalid MIME parts.

Record
CVE-2020-25863
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Updated
2026-11-02
CVE List No score

In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the MIME Multipart dissector could crash. This was addressed in epan/dissectors/packet-multipart.c by correcting the deallocation of invalid MIME parts.

Record
CVE-2020-25863
Updated
2026-11-02
EUVDEUVD-2020-18496 No score

In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the MIME Multipart dissector could crash. This was addressed in epan/dissectors/packet-multipart.c by correcting the deallocation of invalid MIME parts.

Record
EUVD-2020-18496
Updated
2026-11-03
GitHub AdvisoriesGHSA-h5f3-p3hm-f3rj No score

In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the MIME Multipart dissector...

In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the MIME Multipart dissector could crash. This was addressed in epan/dissectors/packet-multipart.c by correcting the deallocation of invalid MIME parts.

Record
GHSA-h5f3-p3hm-f3rj
Updated
2026-11-02
OSVALPINE-CVE-2020-25863 7.5

In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the MIME Multipart dissector could crash. This was addressed in epan/dissectors/packet-multipart.c by correcting the deallocation of invalid MIME parts.

Record
ALPINE-CVE-2020-25863
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-03
OSV 7.5

In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the MIME Multipart dissector could crash. This was addressed in epan/dissectors/packet-multipart.c by correcting the deallocation of invalid MIME parts.

Record
CVE-2020-25863
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 8 moreShow less
OSVDEBIAN-CVE-2020-25863 7.5

In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the MIME Multipart dissector could crash. This was addressed in epan/dissectors/packet-multipart.c by correcting the deallocation of invalid MIME parts.

Record
DEBIAN-CVE-2020-25863
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2020-25863 7.5

In Wireshark 3.2.0 to 3.2.6, 3.0.0 to 3.0.13, and 2.6.0 to 2.6.20, the MIME Multipart dissector could crash. This was addressed in epan/dissectors/packet-multipart.c by correcting the deallocation of invalid MIME parts.

Record
UBUNTU-CVE-2020-25863
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVMGASA-2020-0384 No score

Updated wireshark packages fix security vulnerabilities

The TCP dissector could crash (CVE-2020-25862).

The MIME Multipart dissector could crash (CVE-2020-25863).

The BLIP dissector could crash (CVE-2020-25866).

Record
MGASA-2020-0384
Updated
2026-11-02
OSVopenSUSE-SU-2020:1878-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

  • Update to wireshark 3.2.7:
    • CVE-2020-25863: MIME Multipart dissector crash (bsc#1176908)
    • CVE-2020-25862: TCP dissector crash (bsc#1176909)
    • CVE-2020-25866: BLIP dissector crash (bsc#1176910)
    • CVE-2020-17498: Kafka dissector crash (bsc#1175204)

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2020:1878-1
Updated
2026-11-02
OSVopenSUSE-SU-2020:1882-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

  • Update to wireshark 3.2.7:
    • CVE-2020-25863: MIME Multipart dissector crash (bsc#1176908)
    • CVE-2020-25862: TCP dissector crash (bsc#1176909)
    • CVE-2020-25866: BLIP dissector crash (bsc#1176910)
    • CVE-2020-17498: Kafka dissector crash (bsc#1175204)

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2020:1882-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:11513-1 No score

libwireshark14-3.4.8-1.2 on GA media

These are all security issues fixed in the libwireshark14-3.4.8-1.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11513-1
Updated
2026-11-02
OSVSUSE-SU-2020:3166-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

  • Update to wireshark 3.2.7:
    • CVE-2020-25863: MIME Multipart dissector crash (bsc#1176908)
    • CVE-2020-25862: TCP dissector crash (bsc#1176909)
    • CVE-2020-25866: BLIP dissector crash (bsc#1176910)
    • CVE-2020-17498: Kafka dissector crash (bsc#1175204)
Record
SUSE-SU-2020:3166-1
Updated
2026-11-02
OSVUSN-6262-1 No score

wireshark vulnerabilities

It was discovered that Wireshark did not properly handle certain NFS packages when certain configuration options were enabled. An attacker could possibly use this issue to cause Wireshark to crash, resulting in a denial of service. (CVE-2020-13164)

It was discovered that Wireshark did not properly handle certain GVCP packages. An attacker could possibly use this issue to cause Wireshark to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-15466)

It was discovered that Wireshark did not properly handle certain Kafka packages. An attacker could possibly use this issue to cause Wireshark to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-17498)

It was discovered that Wireshark did not properly handle certain TCP packages containing an invalid 0xFFFF checksum. An attacker could possibly use this issue to cause Wireshark to crash, resulting in a denial of service. (CVE-2020-25862)

It was discovered that Wireshark did not properly handle certain MIME packages containing invalid parts. An attacker could possibly use this issue to cause Wireshark to crash, resulting in a denial of service. (CVE-2020-25863)

Record
USN-6262-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
wireshark
Alpine:v3.10
 2.6.0 up to 3.0.14-r0
3.0.14-r0
wireshark
Alpine:v3.11
 2.6.0 up to 3.0.14-r0
3.0.14-r0
wireshark
Alpine:v3.12
 2.6.0 up to 3.2.7-r0
3.2.7-r0
wireshark
Alpine:v3.13
 2.6.0 up to 3.2.7-r0
3.2.7-r0
wireshark
Alpine:v3.14
 2.6.0 up to 3.2.7-r0
3.2.7-r0
wireshark
Alpine:v3.15
 2.6.0 up to 3.2.7-r0
3.2.7-r0
wireshark
Alpine:v3.16
 2.6.0 up to 3.2.7-r0
3.2.7-r0
wireshark
Alpine:v3.17
 2.6.0 up to 3.2.7-r0
3.2.7-r0
wireshark
Alpine:v3.18
 2.6.0 up to 3.2.7-r0
3.2.7-r0
wireshark
Alpine:v3.19
 2.6.0 up to 3.2.7-r0
3.2.7-r0
Show 25 moreShow less
Affected packages
PackageAffectedFixed
wireshark
Alpine:v3.20
 2.6.0 up to 3.2.7-r0
3.2.7-r0
wireshark
Alpine:v3.21
 2.6.0 up to 3.2.7-r0
3.2.7-r0
wireshark
Alpine:v3.22
 2.6.0 up to 3.2.7-r0
3.2.7-r0
wireshark
Alpine:v3.23
 2.6.0 up to 3.2.7-r0
3.2.7-r0
wireshark
Alpine:v3.24
 2.6.0 up to 3.2.7-r0
3.2.7-r0
wireshark
Debian:12
 before 3.2.7-1
3.2.7-1
wireshark
Debian:13
 before 3.2.7-1
3.2.7-1
wireshark
Debian:14
 before 3.2.7-1
3.2.7-1
wireshark
Debian:9
From an advisory covering 17 CVEs
 before 2.6.20-0+deb9u1, plus listed versions
2.2.6+g32dac6a-22.2.6+g32dac6a-2+deb9u12.2.6+g32dac6a-2+deb9u22.2.6+g32dac6a-2+deb9u32.2.7-1
Show 24 moreShow less
2.4.0-12.4.1-12.4.2-12.4.3-12.4.4-12.4.5-12.4.6-12.6.1-12.6.10-12.6.2-12.6.2-22.6.3-12.6.3-1~deb9u12.6.4-12.6.4-22.6.5-12.6.5-1~deb9u12.6.6-12.6.7-12.6.7-1~deb9u12.6.8-12.6.8-1.12.6.8-1.1~deb9u12.6.9-1
2.6.20-0+deb9u1
wireshark
Mageia:7
From an advisory covering 3 CVEs
 before 3.0.14-1.mga7
3.0.14-1.mga7
wireshark
SUSE:Linux Enterprise Module for Basesystem 15 SP1
From an advisory covering 4 CVEs
 before 3.2.7-3.41.1
3.2.7-3.41.1
wireshark
SUSE:Linux Enterprise Module for Basesystem 15 SP2
From an advisory covering 4 CVEs
 before 3.2.7-3.41.1
3.2.7-3.41.1
wireshark
SUSE:Linux Enterprise Module for Desktop Applications 15 SP1
From an advisory covering 4 CVEs
 before 3.2.7-3.41.1
3.2.7-3.41.1
wireshark
SUSE:Linux Enterprise Module for Desktop Applications 15 SP2
From an advisory covering 4 CVEs
 before 3.2.7-3.41.1
3.2.7-3.41.1
wireshark
Ubuntu:Pro:14.04:LTS
 before 2.6.10-1~ubuntu14.04.0~esm2, plus listed versions
1.10.2-11.10.3-11.10.5-1ubuntu11.10.5-21.10.6-1
Show 7 moreShow less
1.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.12.6.3-1~ubuntu14.04.12.6.4-2~ubuntu14.04.12.6.5-1~ubuntu14.04.12.6.6-1~ubuntu14.04.02.6.8-1~ubuntu14.04.0~esm12.6.10-1~ubuntu14.04.0~esm1
2.6.10-1~ubuntu14.04.0~esm2
wireshark
Ubuntu:Pro:16.04:LTS
 before 2.6.10-1~ubuntu16.04.0+esm1, plus listed versions
1.12.7+g7fc8978-11.12.8+g5b6e543-22.0.1+g59ea380-3build12.0.2+ga16e22e-12.2.6+g32dac6a-2ubuntu0.16.04
Show 6 moreShow less
2.6.3-1~ubuntu16.04.12.6.4-2~ubuntu16.04.02.6.5-1~ubuntu16.04.02.6.6-1~ubuntu16.04.02.6.8-1~ubuntu16.04.02.6.10-1~ubuntu16.04.0
2.6.10-1~ubuntu16.04.0+esm1
wireshark
Ubuntu:Pro:18.04:LTS
 before 2.6.10-1~ubuntu18.04.0+esm1, plus listed versions
2.4.2-12.4.3-12.4.4-12.4.5-12.6.3-1~ubuntu18.04.1
Show 5 moreShow less
2.6.4-2~ubuntu18.04.02.6.5-1~ubuntu18.04.02.6.6-1~ubuntu18.04.02.6.8-1~ubuntu18.04.02.6.10-1~ubuntu18.04.0
2.6.10-1~ubuntu18.04.0+esm1
wireshark
Ubuntu:Pro:20.04:LTS
 before 3.2.3-1ubuntu0.1~esm1, plus listed versions
3.0.5-13.0.7-13.2.1-13.2.2-13.2.3-1
3.2.3-1ubuntu0.1~esm1
wireshark
Ubuntu:Pro:14.04:LTS
From an advisory covering 5 CVEs
 before 2.6.10-1~ubuntu14.04.0~esm2, plus listed versions
1.10.2-11.10.3-11.10.5-1ubuntu11.10.5-21.10.6-1
Show 7 moreShow less
1.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.12.6.3-1~ubuntu14.04.12.6.4-2~ubuntu14.04.12.6.5-1~ubuntu14.04.12.6.6-1~ubuntu14.04.02.6.8-1~ubuntu14.04.0~esm12.6.10-1~ubuntu14.04.0~esm1
2.6.10-1~ubuntu14.04.0~esm2
wireshark
Ubuntu:Pro:16.04:LTS
From an advisory covering 5 CVEs
 before 2.6.10-1~ubuntu16.04.0+esm1, plus listed versions
1.12.7+g7fc8978-11.12.8+g5b6e543-22.0.1+g59ea380-3build12.0.2+ga16e22e-12.2.6+g32dac6a-2ubuntu0.16.04
Show 6 moreShow less
2.6.3-1~ubuntu16.04.12.6.4-2~ubuntu16.04.02.6.5-1~ubuntu16.04.02.6.6-1~ubuntu16.04.02.6.8-1~ubuntu16.04.02.6.10-1~ubuntu16.04.0
2.6.10-1~ubuntu16.04.0+esm1
wireshark
Ubuntu:Pro:18.04:LTS
From an advisory covering 5 CVEs
 before 2.6.10-1~ubuntu18.04.0+esm1, plus listed versions
2.4.2-12.4.3-12.4.4-12.4.5-12.6.3-1~ubuntu18.04.1
Show 5 moreShow less
2.6.4-2~ubuntu18.04.02.6.5-1~ubuntu18.04.02.6.6-1~ubuntu18.04.02.6.8-1~ubuntu18.04.02.6.10-1~ubuntu18.04.0
2.6.10-1~ubuntu18.04.0+esm1
wireshark
Ubuntu:Pro:20.04:LTS
From an advisory covering 5 CVEs
 before 3.2.3-1ubuntu0.1~esm1, plus listed versions
3.0.5-13.0.7-13.2.1-13.2.2-13.2.3-1
3.2.3-1ubuntu0.1~esm1
wireshark
openSUSE:Leap 15.1
From an advisory covering 4 CVEs
 before 3.2.7-lp151.2.15.1
3.2.7-lp151.2.15.1
wireshark
openSUSE:Leap 15.2
From an advisory covering 4 CVEs
 before 3.2.7-lp152.2.6.1
3.2.7-lp152.2.6.1
wireshark
openSUSE:Tumbleweed
From an advisory covering 163 CVEs
 before 3.4.8-1.2
3.4.8-1.2

History

History
RecordedChangedSources
affected, facts
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2020-25863 is a high vulnerability (CVSS 7.5) in Wireshark, published October 6, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.92%, the 92nd percentile. Fixed in wireshark 3.0.14-r0.

References

Show 194 moreShow less
This page doesn't list everything

Left out here: 1 reference. The JSON record has them.

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