CVE-2026-57160

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 76% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

PJSIP is a free and open source multimedia communication library written in C. Prior to commit d6a0e7f, a buffer overflow can occur in pjsip_generic_array_hdr_print() in pjsip/src/pjsip/sip_msg.c, the function that serializes generic array headers (such as Allow, Require, Supported, and Unsupported). Under certain output-buffer boundary conditions the function can write one byte past the end of the buffer. This is reachable mainly in applications that parse and re-serialize incoming SIP requests — for example a proxy, SBC, or B2BUA — where a remote peer can influence the serialized message. The out-of-bounds write is a single fixed byte; code execution and information disclosure are not demonstrated, and in typical pool-based allocations the byte falls within allocation slack. This issue has been patched via commit d6a0e7f.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 11, 2026

Advisory Details (2)

Auto-updated Sep 4, 2026
Patch available. Sources: github, github_commit.
github_commit

commit d6a0e7f76611 (pjsip/pjproject)

Fix landed in pjsip/pjproject commit d6a0e7f76611 — awaiting tagged release

https://github.com/pjsip/pjproject/commit/d6a0e7f76611c3a6f530ee051e3e7a622bb1748c
github Patch Available

SIP message header buffer overflow · Advisory · pjsip/pjproject · GitHub

https://github.com/pjsip/pjproject/security/advisories/GHSA-277r-3q2j-mxcw

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
asterisk0.1.11-3 ... 1:22.9.0+dfsg+~cs6.16.60671434-1 (296 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 30× 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. 2026-09-19 13:01 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 13:19 UTCEG score recompute
  4. 2026-09-17 19:31 UTCEPSS rescore
  5. 2026-09-17 13:39 UTCEG score recompute
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 13:57 UTCEG score recompute
  8. 2026-09-16 05:15 UTCEPSS rescore
  9. 2026-09-15 14:16 UTCEG score recompute
  10. 2026-09-15 03:11 UTCEPSS rescore
  11. 2026-09-14 14:35 UTCEG score recompute
  12. 2026-09-13 16:47 UTCEPSS rescore
  13. 2026-09-12 15:14 UTCEG score recompute
  14. 2026-09-11 15:33 UTCEG score recompute▼ 1.60
  15. 2026-09-11 15:32 UTCNVD updateCVSS v3 → 5.3
  16. 2026-09-11 14:53 UTCEPSS rescore
  17. 2026-09-10 23:03 UTCEG score recompute
  18. 2026-09-10 09:35 UTCEPSS rescore
  19. 2026-09-09 23:22 UTCEG score recompute
  20. 2026-09-08 22:01 UTCEPSS rescore
  21. 2026-09-08 19:56 UTCEG score recompute
  22. 2026-09-08 18:16 UTCEG score recompute
  23. 2026-09-07 17:37 UTCEG score recompute
  24. 2026-09-07 16:01 UTCEPSS rescore
  25. 2026-09-06 17:56 UTCEG score recompute
Show 5 more
  1. 2026-09-06 13:47 UTCEPSS rescore
  2. 2026-09-05 18:15 UTCEG score recompute
  3. 2026-09-04 18:35 UTCEG score recompute
  4. 2026-09-04 17:20 UTCEG score recompute
  5. 2026-09-04 17:19 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-57160?
CVE-2026-57160 is a medium vulnerability published on September 4, 2026. PJSIP is a free and open source multimedia communication library written in C. Prior to commit d6a0e7f, a buffer overflow can occur in pjsipgenericarrayhdrprint() in pjsip/src/pjsip/sip_msg.c, the function that serializes generic array headers (such as Allow, Require, Supported, and Unsupported).…
When was CVE-2026-57160 disclosed?
CVE-2026-57160 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57160 actively exploited?
CVE-2026-57160 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 76.4% of all scored CVEs.
What is the CVSS score of CVE-2026-57160?
CVE-2026-57160 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-57160?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57160, 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.

Dependency Blast Radius

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