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TI-2026-76188 Aliases CVE-2026-112060GHSA-x953-qc42-3hqh

Heap out-of-bounds write in librtmp RTMPDump via AMF3_Decode

Priority MEDIUM 60CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
Low · Low · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

librtmp in RTMPDump through 2.6 contains an out-of-bounds read and heap out-of-bounds write (CWE-787) because AMF3_Decode ignores AMF3 property decode failures. A malicious RTMP server or man-in-the-middle attacker can send oversized AMF3 string lengths, and when the token option is used, DecodeTEA corrupts heap memory and leaks heap bytes.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

librtmp in RTMPDump through 2.6 contains an out-of-bounds read and heap out-of-bounds write vulnerability because AMF3_Decode ignores AMF3 property decode failures. Malicious RTMP servers or man-in-the-middle attackers can send oversized AMF3 string lengths, and with the token option DecodeTEA corrupts heap memory and leaks heap bytes.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00177 7th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
RTMPDumplibrtmpup to 2.6—No fix listedCNA
  • librtmp VendorRTMPDump Affected up to 2.6 Fixed in — No fix listed CNA

Remediation

No fixed version is listed for librtmp.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-18 Threatist record created from CVE-2026-112060
  2. 2026-10-18 Alias added: GHSA-x953-qc42-3hqh
  3. 2026-10-19 CISA SSVC decision points changed
  4. 2026-11-06 Affected versions changed · Red Hat
  5. 2026-11-06 CVSS score added · Red Hat

References

Advisory 1

Other 2

  • TI-2026-76189 Heap out-of-bounds read in librtmp (RTMPDump) AMF0 parsing CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences