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TI-2026-76189 Aliases CVE-2026-112061GHSA-m837-gfcx-6jp4

Heap out-of-bounds read in librtmp (RTMPDump) AMF0 parsing

Priority LOW 29CWE-125Published · Updated

Key facts

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

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

Summary

librtmp (RTMPDump) through 2.6 contains a heap out-of-bounds read in AMFProp_Decode, which reads an AMF0 strict-array element count before checking that four bytes remain (CWE-125). A malicious RTMP server or man in the middle can send a crafted AMF0 body that crashes the client.

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

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00221 12th 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
None
Automatable
Yes
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

The sources list no fixed version for librtmp (RTMPDump).

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-2026-112061
  2. 2026-10-18 Alias added: GHSA-m837-gfcx-6jp4
  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-2026-76188 Heap out-of-bounds write in librtmp RTMPDump via AMF3_Decode CVSS 4.0MEDIUM 6.1

Sources

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