CVE-2026-90778

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 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.

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
57%
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 Buffer Overflow via SIP To Header Tag | Advisories | VulnCheck

https://www.vulncheck.com/advisories/sipp-through-3.7.7-buffer-overflow-via-sip-to-header-tag
generic

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

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

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

https://github.com/SIPp/sipp/blob/v3.7.7/src/sip_parser.cpp#L76-L113
github_commit

commit ddf22d1a54e0 (SIPp/sipp)

Fix landed in SIPp/sipp commit ddf22d1a54e0 — awaiting tagged release

https://github.com/SIPp/sipp/commit/ddf22d1a54e0396b2e18ebaf4cf5a3fa860e5da4
github_pr

fix: bound get_peer_tag() copy against buffer size

Fix merged in SIPp/sipp PR #879 on 2026-08-24 — awaiting tagged release

https://github.com/SIPp/sipp/pull/879

Vendor Advisories for CVE-2026-90778(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 28× in last 7d / 53× 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 02:04 UTCGHSA enrichment
  2. 2026-09-24 14:53 UTCEG score recompute
  3. 2026-09-24 14:53 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 04:33 UTCEG score recompute
  6. 2026-09-24 04:33 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 17:22 UTCGHSA enrichment
  9. 2026-09-23 09:48 UTCGHSA enrichment
  10. 2026-09-22 22:37 UTCEG score recompute
  11. 2026-09-22 22:37 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 11:27 UTCGHSA enrichment
  14. 2026-09-22 00:15 UTCEG score recompute
  15. 2026-09-22 00:15 UTCGHSA enrichment
  16. 2026-09-21 21:09 UTCEPSS rescore
  17. 2026-09-21 13:04 UTCGHSA enrichment
  18. 2026-09-21 01:53 UTCEG score recompute
  19. 2026-09-21 01:53 UTCGHSA enrichment
  20. 2026-09-20 20:16 UTCEPSS rescore
  21. 2026-09-20 14:42 UTCGHSA enrichment
  22. 2026-09-20 03:30 UTCGHSA enrichment
  23. 2026-09-19 16:19 UTCEG score recompute
  24. 2026-09-19 16:19 UTCGHSA enrichment
  25. 2026-09-19 05:08 UTCEG score recompute
Show 28 more
  1. 2026-09-19 05:08 UTCGHSA enrichment
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 17:57 UTCGHSA enrichment
  4. 2026-09-18 06:46 UTCGHSA enrichment
  5. 2026-09-17 19:35 UTCEG score recompute
  6. 2026-09-17 19:35 UTCGHSA enrichment
  7. 2026-09-17 19:32 UTCEPSS rescore
  8. 2026-09-17 05:09 UTCGHSA enrichment
  9. 2026-09-16 17:58 UTCEG score recompute
  10. 2026-09-16 17:58 UTCGHSA enrichment
  11. 2026-09-16 14:09 UTCEPSS rescore
  12. 2026-09-16 05:25 UTCEG score recompute
  13. 2026-09-16 05:25 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 18:15 UTCGHSA enrichment
  16. 2026-09-15 06:31 UTCEG score recompute
  17. 2026-09-15 06:31 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 19:21 UTCEG score recompute
  20. 2026-09-14 19:21 UTCGHSA enrichment
  21. 2026-09-14 18:27 UTCEG score recompute
  22. 2026-09-14 18:27 UTCGHSA enrichment
  23. 2026-09-14 10:40 UTCGHSA enrichment
  24. 2026-09-13 23:29 UTCEG score recompute
  25. 2026-09-13 23:29 UTCGHSA enrichment
  26. 2026-09-13 12:18 UTCEG score recompute
  27. 2026-09-13 11:49 UTCEG score recompute
  28. 2026-09-13 11:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-90778?
CVE-2026-90778 is a high vulnerability published on September 13, 2026. SIPp through 3.7.7 contains a buffer overflow vulnerability in getpeertag() 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…
When was CVE-2026-90778 disclosed?
CVE-2026-90778 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-2026-90778 actively exploited?
CVE-2026-90778 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 43.4% of all scored CVEs.
What is the CVSS score of CVE-2026-90778?
CVE-2026-90778 has a CVSS v4.0 base score of 7.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-90778?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90778, 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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