CVE-2026-90779

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-13. the CNA's CVSS baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
55%
KEV
Not listed

Published

September 13, 2026

Last Modified

September 24, 2026

Advisory Details (5)

Auto-updated Sep 13, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
generic

SIPp through 3.7.7 Stack Buffer Overflow via createAuthHeader Algorithm Parameter | Advisories | VulnCheck

https://www.vulncheck.com/advisories/sipp-through-3.7.7-stack-buffer-overflow-via-createauthheader-algorithm-parameter
generic

GitHub - SIPp/sipp: The SIPp testing tool · GitHub

https://github.com/SIPp/sipp
generic

sipp/src/auth.cpp at v3.7.7 · SIPp/sipp · GitHub

https://github.com/SIPp/sipp/blob/v3.7.7/src/auth.cpp#L183-L192
github_commit

commit 1d4a5622bea3 (SIPp/sipp)

Fix landed in SIPp/sipp commit 1d4a5622bea3 — awaiting tagged release

https://github.com/SIPp/sipp/commit/1d4a5622bea34d0b5cdff333e6b5734608e30af7
github_pr

fix: use getAuthParameter() for algorithm in createAuthHeader()

Fix merged in SIPp/sipp PR #880 on 2026-08-24 — awaiting tagged release

https://github.com/SIPp/sipp/pull/880

Vendor Advisories for CVE-2026-90779(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 29× in last 7d / 55× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-25 13:27 UTCGHSA enrichment
  2. 2026-09-25 02:09 UTCGHSA enrichment
  3. 2026-09-24 14:53 UTCEG score recompute
  4. 2026-09-24 14:53 UTCGHSA enrichment
  5. 2026-09-24 14:04 UTCEPSS rescore
  6. 2026-09-24 04:39 UTCEG score recompute
  7. 2026-09-24 04:39 UTCGHSA enrichment
  8. 2026-09-23 17:54 UTCEPSS rescore
  9. 2026-09-23 17:22 UTCGHSA enrichment
  10. 2026-09-23 15:10 UTCGHSA enrichment
  11. 2026-09-23 03:54 UTCGHSA enrichment
  12. 2026-09-22 16:38 UTCEG score recompute
  13. 2026-09-22 16:38 UTCGHSA enrichment
  14. 2026-09-22 16:01 UTCEPSS rescore
  15. 2026-09-22 05:21 UTCEG score recompute
  16. 2026-09-22 05:21 UTCGHSA enrichment
  17. 2026-09-21 21:09 UTCEPSS rescore
  18. 2026-09-21 18:05 UTCGHSA enrichment
  19. 2026-09-21 06:49 UTCEG score recompute
  20. 2026-09-21 06:49 UTCGHSA enrichment
  21. 2026-09-20 20:16 UTCEPSS rescore
  22. 2026-09-20 19:32 UTCGHSA enrichment
  23. 2026-09-20 08:16 UTCGHSA enrichment
  24. 2026-09-19 20:59 UTCEG score recompute
  25. 2026-09-19 20:59 UTCGHSA enrichment
Show 30 more
  1. 2026-09-19 09:43 UTCGHSA enrichment
  2. 2026-09-18 22:25 UTCEG score recompute
  3. 2026-09-18 22:25 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 11:09 UTCGHSA enrichment
  6. 2026-09-17 23:52 UTCEG score recompute
  7. 2026-09-17 23:52 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 12:23 UTCGHSA enrichment
  10. 2026-09-17 01:06 UTCEG score recompute
  11. 2026-09-17 01:06 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 13:50 UTCEG score recompute
  14. 2026-09-16 13:50 UTCGHSA enrichment
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-16 02:20 UTCGHSA enrichment
  17. 2026-09-15 15:03 UTCGHSA enrichment
  18. 2026-09-15 03:42 UTCEG score recompute
  19. 2026-09-15 03:42 UTCGHSA enrichment
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-14 16:25 UTCEG score recompute
  22. 2026-09-14 16:25 UTCGHSA enrichment
  23. 2026-09-14 15:45 UTCEG score recompute
  24. 2026-09-14 15:45 UTCGHSA enrichment
  25. 2026-09-14 10:50 UTCGHSA enrichment
  26. 2026-09-13 23:34 UTCEG score recompute
  27. 2026-09-13 23:34 UTCGHSA enrichment
  28. 2026-09-13 12:18 UTCEG score recompute
  29. 2026-09-13 11:49 UTCEG score recompute
  30. 2026-09-13 11:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-90779?
CVE-2026-90779 is a high vulnerability published on September 13, 2026. 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.
When was CVE-2026-90779 disclosed?
CVE-2026-90779 was first published in the National Vulnerability Database on September 13, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90779 actively exploited?
CVE-2026-90779 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 45.2% of all scored CVEs.
What is the CVSS score of CVE-2026-90779?
CVE-2026-90779 has a CVSS v4.0 base score of 7.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-90779?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90779, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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