CVE-2026-6678

MEDIUMNVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory (severity: LOW) published 2026-06-25. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

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

Integer underflow in wc_PKCS7_DecryptOri when handling crafted Other Recipient Info, leading to incorrect length handling during decryption.

CVSS v3
5.3
EG Score
5.3(high)
EPSS
8.8%
KEV
Not listed

Published

June 25, 2026

Last Modified

July 1, 2026

Advisory Details (2)

Auto-updated Jun 27, 2026
Patch available. Sources: github_pr.
generic Patch Available

wolfSSL Security Vulnerabilities | Documentation - wolfSSL

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

PKCS#7 fixes

Fix merged in wolfSSL/wolfssl PR #10203 on 2026-04-24 — awaiting tagged release

https://github.com/wolfSSL/wolfssl/pull/10203

Vendor Advisories for CVE-2026-6678(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 22× in last 7d / 33× 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 18:12 UTCEG score recompute
  2. 2026-07-06 18:12 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 18:26 UTCEG score recompute
  8. 2026-07-05 18:26 UTCGHSA enrichment
  9. 2026-07-04 18:53 UTCEG score recompute
  10. 2026-07-04 18:53 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-03 19:19 UTCEG score recompute
  14. 2026-07-03 19:19 UTCGHSA enrichment
  15. 2026-07-02 19:47 UTCEG score recompute
  16. 2026-07-02 19:46 UTCGHSA enrichment
  17. 2026-07-01 20:14 UTCEG score recompute
  18. 2026-07-01 20:13 UTCGHSA enrichment
  19. 2026-07-01 15:07 UTCEPSS rescore
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 20:39 UTCEG score recompute
  22. 2026-06-30 20:39 UTCGHSA enrichment
  23. 2026-06-29 21:02 UTCEG score recompute▲ 4.30
  24. 2026-06-29 21:01 UTCGHSA enrichment
  25. 2026-06-29 14:06 UTCEPSS rescore
Show 8 more
  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-27 21:42 UTCNVD updateCVSS v3 → 5.3 · severity → MEDIUM
  3. 2026-06-27 03:08 UTCEPSS rescore
  4. 2026-06-26 15:44 UTCEG score recompute▲ 1.00
  5. 2026-06-26 15:44 UTCGHSA enrichment
  6. 2026-06-26 15:40 UTCNVD updateCVSS v3 → 1 · CVSS v4 → 1
  7. 2026-06-25 21:46 UTCEG score recompute
  8. 2026-06-25 21:46 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-6678?
CVE-2026-6678 is a medium vulnerability published on June 25, 2026. Integer underflow in wcPKCS7DecryptOri when handling crafted Other Recipient Info, leading to incorrect length handling during decryption.
When was CVE-2026-6678 disclosed?
CVE-2026-6678 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6678 actively exploited?
CVE-2026-6678 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-6678?
CVE-2026-6678 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-6678?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6678, 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

Explore the affected products and dependency analysis for CVE-2026-6678

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