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TI-2026-61686 Aliases CVE-2026-90779GHSA-h494-p5hw-ph93

SIPp through 3.7.7 Stack Buffer Overflow via createAuthHeader Algorithm Parameter

Priority MEDIUM 45CWE-121Published · 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-121 and the CVSS impact.

Summary

SIPp through 3.7.7 contains a stack buffer overflow vulnerability in createAuthHeader() when processing SIP authentication challenges with oversized algorithm parameters. A malicious SIP server can send a crafted 401 or 407 challenge to corrupt the stack and crash the client process.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00802 56th 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-2026-90779
  2. 2026-10-03 Alias added: GHSA-h494-p5hw-ph93

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-2026-61685 SIPp through 3.7.7 Buffer Overflow via SIP To Header Tag 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