CVE-2026-112061
librtmp (RTMPDump) through 2.6 Heap Out-of-Bounds Read via AMFProp_Decode
librtmp (RTMPDump) through 2.6 contains a heap out-of-bounds read vulnerability in AMFProp_Decode that reads an AMF0 strict-array element count before checking that four bytes remain. A malicious RTMP server or man in the middle can send an AMF0 body ending with a strict-array type byte and fewer than four trailing bytes to crash the client.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Passive
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
librtmp (RTMPDump) through 2.6 Heap Out-of-Bounds Read via AMFProp_Decode
librtmp (RTMPDump) through 2.6 contains a heap out-of-bounds read vulnerability in AMFProp_Decode that reads an AMF0 strict-array element count before checking that four bytes remain. A malicious RTMP server or man in the middle can send an AMF0 body ending with a strict-array type byte and fewer than four trailing bytes to crash the client.
- Record
CVE-2026-112061- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N - CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L - Weakness
- CWE-125
- Updated
- 2026-11-06
EUVDEUVD-2026-103503
librtmp (RTMPDump) through 2.6 contains a heap out-of-bounds read vulnerability in AMFProp_Decode that reads an AMF0 strict-array element count before checking that four bytes remain. A malicious RTMP server or man in the middle can send an AMF0 body ending with a strict-array type byte and fewer than four trailing bytes to crash the client.
- Record
EUVD-2026-103503- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N - Updated
- 2026-11-06
GitHub AdvisoriesGHSA-m837-gfcx-6jp4
librtmp (RTMPDump) through 2.6 contains a heap out-of-bounds read vulnerability in AMFProp_Decode...
librtmp (RTMPDump) through 2.6 contains a heap out-of-bounds read vulnerability in AMFProp_Decode that reads an AMF0 strict-array element count before checking that four bytes remain. A malicious RTMP server or man in the middle can send an AMF0 body ending with a strict-array type byte and fewer than four trailing bytes to crash the client.
- Record
GHSA-m837-gfcx-6jp4- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L - Weakness
- CWE-125
- Updated
- 2026-11-02
NVD
librtmp (RTMPDump) through 2.6 contains a heap out-of-bounds read vulnerability in AMFProp_Decode that reads an AMF0 strict-array element count before checking that four bytes remain. A malicious RTMP server or man in the middle can send an AMF0 body ending with a strict-array type byte and fewer than four trailing bytes to crash the client.
- Record
CVE-2026-112061- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L - Weakness
- CWE-125
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-112061
librtmp (RTMPDump) through 2.6 contains a heap out-of-bounds read vulnerability in AMFProp_Decode that reads an AMF0 strict-array element count before checking that four bytes remain. A malicious RTMP server or man in the middle can send an AMF0 body ending with a strict-array type byte and fewer than four trailing bytes to crash the client.
- Record
DEBIAN-CVE-2026-112061- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-112061
librtmp (RTMPDump) through 2.6 contains a heap out-of-bounds read vulnerability in AMFProp_Decode that reads an AMF0 strict-array element count before checking that four bytes remain. A malicious RTMP server or man in the middle can send an AMF0 body ending with a strict-array type byte and fewer than four trailing bytes to crash the client.
- Record
UBUNTU-CVE-2026-112061- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N - CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
rtmpdumpDebian:12 |
All versions, plus listed versions 2.4+20151223.gitfa8646d.1-22.4+20151223.gitfa8646d.1-32.6-1 |
None known |
rtmpdumpDebian:13 |
All versions, plus listed versions 2.4+20151223.gitfa8646d.1-22.4+20151223.gitfa8646d.1-32.6-1 |
None known |
rtmpdumpDebian:14 |
All versions, plus listed versions 2.4+20151223.gitfa8646d.1-22.4+20151223.gitfa8646d.1-32.6-1 |
None known |
rtmpdumpUbuntu:14.04:LTS |
All versions, plus listed versions 2.4+20121230.gitdf6c518-12.4+20121230.gitdf6c518-1ubuntu0.1 |
None known |
rtmpdumpUbuntu:16.04:LTS |
All versions, plus listed versions 2.4+20150115.gita107cef-1build12.4+20151223.gitfa8646d-12.4+20151223.gitfa8646d-1build12.4+20151223.gitfa8646d-1ubuntu0.1 |
None known |
rtmpdumpUbuntu:18.04:LTS |
All versions, plus listed versions 2.4+20151223.gitfa8646d.1-1 |
None known |
rtmpdumpUbuntu:20.04:LTS |
All versions, plus listed versions 2.4+20151223.gitfa8646d.1-22.4+20151223.gitfa8646d.1-2build1 |
None known |
rtmpdumpUbuntu:22.04:LTS |
All versions, plus listed versions 2.4+20151223.gitfa8646d.1-2build32.4+20151223.gitfa8646d.1-2build4 |
None known |
rtmpdumpUbuntu:24.04:LTS |
All versions, plus listed versions 2.4+20151223.gitfa8646d.1-2build42.4+20151223.gitfa8646d.1-2build62.4+20151223.gitfa8646d.1-2build7 |
None known |
rtmpdumpUbuntu:26.10 |
All versions, plus listed versions 2.4+20151223.gitfa8646d.1-32.6-1 |
None known |
rtmpdumpUbuntu:26.04:LTS |
All versions, plus listed versions 2.4+20151223.gitfa8646d.1-2build82.4+20151223.gitfa8646d.1-3 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | CVE List | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-112061 is a medium vulnerability (CVSS 5.3) in Rtmpdump Librtmp, published October 18, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.22%, the 12th percentile. No source names a fixed version.
References
hackmd.io/@haindpwn/librtmp-amf3-decode-and-strict-array-oob
git.ffmpeg.org/gitweb/rtmpdump.git/blob/138fdb258d9fc26f1843fd1b891180416c9dc575:/librtmp/amf.c
rtmpdump.mplayerhq.hu
vulncheck.com/advisories/librtmp-rtmpdump-through-2.6-heap-out-of-bounds-read-via-amfprop-decode
nvd.nist.gov/vuln/detail/CVE-2026-112061
github.com/advisories/GHSA-m837-gfcx-6jp4
security-tracker.debian.org/tracker/CVE-2026-112061
ubuntu.com/security/CVE-2026-112061
cve.org/CVERecord?id=CVE-2026-112061