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TI-2026-61685 Aliases CVE-2026-90778GHSA-w99r-9mmj-g2pr

SIPp through 3.7.7 Buffer Overflow via SIP To Header Tag

Priority MEDIUM 45CWE-120Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

SIPp through 3.7.7 contains a buffer overflow vulnerability in get_peer_tag() function when processing SIP To headers with tag parameters of 2049 bytes or more. Unauthenticated remote attackers can send crafted SIP messages with oversized tag parameters to overflow the static buffer and crash the process.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00857 58th 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
SIPpsippup to 3.7.7—No fix listedCNA
  • sipp VendorSIPp Affected up to 3.7.7 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-90778
  2. 2026-10-03 Alias added: GHSA-w99r-9mmj-g2pr

References

Patch 2

Other 2

  • TI-2018-15581 SIPp 3.6 Local Buffer Overflow via Command-line Arguments CVSS 4.0HIGH 8.6
  • TI-2018-15450 SIPP 3.3 Stack-Based Buffer Overflow via Configuration File CVSS 4.0HIGH 8.6
  • TI-2026-61687 SIPp through 3.7.7 Buffer Overflow via Oversized SIP Header Content CVSS 4.0HIGH 8.7
  • TI-2026-61686 SIPp through 3.7.7 Stack Buffer Overflow via createAuthHeader Algorithm Parameter CVSS 4.0HIGH 8.7
  • TI-2008-01882 Stack-based buffer overflow in the get_remote_video_port_media function in call.cpp in… CVSS 2.0HIGH 7.5

Sources

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