CVE-2026-55961

HIGHNVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

wolfSSL_PKCS7_verify() returning success for a degenerate (certs-only) PKCS#7 object that contains no signer. Such an object has empty signerInfos, so the underlying signed-data verification succeeds without authenticating any content. The compatibility-layer verify path now rejects the object when no signer signature has actually been verified, so a PKCS#7 carrying no valid signature is no longer reported as verified. This is enforced regardless of the PKCS7_NOVERIFY flag, which only suppresses signer certificate chain validation and was never intended to waive the requirement that a signature exist. Only affects OpenSSL compatibility builds that call the PKCS7_verify() compatibility API on potentially degenerate PKCS#7 bundles.

CVSS v3
7.5
EG Score
7.5(high)
EPSS
0.8%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 26, 2026

Advisory Details (2)

Auto-updated Jun 25, 2026
Patch available. Sources: github_pr.
generic Patch Available

wolfSSL Security Vulnerabilities | Documentation - wolfSSL

https://www.wolfssl.com/docs/security-vulnerabilities/
github_pr

Various fixes

Fix merged in wolfSSL/wolfssl PR #10702 on 2026-06-17 — awaiting tagged release

https://github.com/wolfSSL/wolfssl/pull/10702

Vendor Advisories for CVE-2026-55961(2)

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 38× in last 7d / 66× 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. 2026-07-06 23:54 UTCEG score recompute
  2. 2026-07-06 23:54 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 12:23 UTCEG score recompute
  6. 2026-07-06 12:23 UTCGHSA enrichment
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-06 00:54 UTCEG score recompute
  10. 2026-07-06 00:54 UTCGHSA enrichment
  11. 2026-07-05 13:25 UTCEG score recompute
  12. 2026-07-05 13:25 UTCGHSA enrichment
  13. 2026-07-05 01:56 UTCEG score recompute
  14. 2026-07-05 01:56 UTCGHSA enrichment
  15. 2026-07-04 14:27 UTCEG score recompute
  16. 2026-07-04 14:27 UTCGHSA enrichment
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-04 02:58 UTCEG score recompute
  20. 2026-07-04 02:58 UTCGHSA enrichment
  21. 2026-07-03 15:21 UTCEG score recompute
  22. 2026-07-03 15:20 UTCGHSA enrichment
  23. 2026-07-03 03:49 UTCEG score recompute
  24. 2026-07-03 03:49 UTCGHSA enrichment
  25. 2026-07-02 16:14 UTCEG score recompute
Show 41 more
  1. 2026-07-02 16:14 UTCGHSA enrichment
  2. 2026-07-02 04:45 UTCEG score recompute
  3. 2026-07-02 04:44 UTCGHSA enrichment
  4. 2026-07-01 17:16 UTCEG score recompute
  5. 2026-07-01 17:16 UTCGHSA enrichment
  6. 2026-07-01 15:07 UTCEPSS rescore
  7. 2026-07-01 05:47 UTCEG score recompute
  8. 2026-07-01 05:46 UTCGHSA enrichment
  9. 2026-06-30 23:22 UTCEPSS rescore
  10. 2026-06-30 18:15 UTCEG score recompute
  11. 2026-06-30 18:15 UTCGHSA enrichment
  12. 2026-06-30 06:47 UTCEG score recompute
  13. 2026-06-30 06:47 UTCGHSA enrichment
  14. 2026-06-29 19:18 UTCEG score recompute
  15. 2026-06-29 19:18 UTCGHSA enrichment
  16. 2026-06-29 14:06 UTCEPSS rescore
  17. 2026-06-29 14:06 UTCEPSS rescore
  18. 2026-06-29 07:49 UTCEG score recompute
  19. 2026-06-29 07:49 UTCGHSA enrichment
  20. 2026-06-28 20:19 UTCEG score recompute
  21. 2026-06-28 20:19 UTCGHSA enrichment
  22. 2026-06-28 14:07 UTCEPSS rescore
  23. 2026-06-28 08:50 UTCEG score recompute
  24. 2026-06-28 08:50 UTCGHSA enrichment
  25. 2026-06-28 04:56 UTCEPSS rescore
  26. 2026-06-28 04:56 UTCEPSS rescore
  27. 2026-06-27 21:22 UTCEG score recompute
  28. 2026-06-27 21:22 UTCGHSA enrichment
  29. 2026-06-27 09:54 UTCEG score recompute
  30. 2026-06-27 09:54 UTCGHSA enrichment
  31. 2026-06-27 03:08 UTCEPSS rescore
  32. 2026-06-26 22:25 UTCEG score recompute▼ 0.70
  33. 2026-06-26 22:25 UTCGHSA enrichment
  34. 2026-06-26 17:41 UTCNVD updateCVSS v3 → 7.5
  35. 2026-06-26 10:57 UTCEG score recompute
  36. 2026-06-26 10:57 UTCGHSA enrichment
  37. 2026-06-25 19:50 UTCEG score recompute▲ 8.20
  38. 2026-06-25 19:50 UTCGHSA enrichment
  39. 2026-06-25 19:49 UTCNVD updateCVSS v3 → 8.2 · CVSS v4 → 8.2
  40. 2026-06-25 18:46 UTCEG score recompute
  41. 2026-06-25 18:46 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-55961?
CVE-2026-55961 is a high vulnerability published on June 25, 2026. wolfSSLPKCS7verify() returning success for a degenerate (certs-only) PKCS#7 object that contains no signer. Such an object has empty signerInfos, so the underlying signed-data verification succeeds without authenticating any content. The compatibility-layer verify path now rejects the object when…
When was CVE-2026-55961 disclosed?
CVE-2026-55961 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55961 actively exploited?
CVE-2026-55961 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-55961?
CVE-2026-55961 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-55961?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55961, 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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