CVE-2026-6330

MEDIUMNVD 6.56.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 6.5 from GitHub Security Advisory published 2026-06-26. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

The ML-KEM ARM64 NEON ciphertext comparison only compares half of the input, breaking the Fujisaki-Okamoto transform's implicit rejection and weakening IND-CCA2 security on that code path. The constant-time comparison effectively ignored part of the re-encrypted ciphertext, so a decapsulating party could fail to detect a manipulated ciphertext and proceed without the standard's required implicit rejection.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

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 (value × EchelonGraph’s weight)
Severity65% × 45%
The EG Score, 6.5 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 25, 2026

Last Modified

June 27, 2026

Advisory Details (2)

Auto-updated Jun 25, 2026
Fix referenced — no release confirmed yet. Sources: github_pr.
Web pageMentions a patch (unverified)

wolfSSL Security Vulnerabilities | Documentation - wolfSSL

https://www.wolfssl.com/docs/security-vulnerabilities/
GitHub pull request

Various fixes

Fix merged in wolfSSL/wolfssl PR #10192 on 2026-04-15 — awaiting tagged release

https://github.com/wolfSSL/wolfssl/pull/10192

Vendor Advisories for CVE-2026-6330(2)

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

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
wolfssl4.6.0+p1-0+deb11u1 ... 5.9.2-1 (40 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
wolfssl5.5.4-2 ... 5.9.2-1 (27 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
wolfssl5.7.2-0.1 ... 5.9.2-1 (14 versions)
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 34× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 98 of 203 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 2 repeat rows among the latest 100 are merged into the row they repeat. The 105 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-10-13 22:54 UTCOSV refresh
  3. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  5. 2026-10-12 15:49 UTCEG score recompute
  6. 2026-10-11 19:33 UTCEG score recompute
  7. 2026-10-11 16:48 UTCEG score recompute
  8. 2026-10-11 14:10 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  17. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  22. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  23. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  24. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  25. 2026-09-23 08:24 UTCEG score recompute
Show 73 more
  1. 2026-09-23 08:24 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  2. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  3. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  4. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  5. 2026-09-18 07:18 UTCEG score recompute
  6. 2026-09-18 07:18 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  7. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  8. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  9. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  10. 2026-09-13 14:10 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  11. 2026-09-12 15:41 UTCEG score recompute
  12. 2026-09-12 15:41 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  13. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  14. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  15. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  16. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  17. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  18. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  19. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  20. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  21. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  22. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  23. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  24. 2026-08-30 19:27 UTCEG score recompute
  25. 2026-08-30 19:27 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  26. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  27. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  28. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  29. 2026-08-27 23:15 UTCEG score recompute
  30. 2026-08-27 23:15 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  31. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  32. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  33. 2026-08-25 05:32 UTCEG score recompute
  34. 2026-08-25 05:32 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  35. 2026-08-24 07:03 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  36. 2026-08-23 08:33 UTCEG score recompute
  37. 2026-08-23 08:33 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  38. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  39. 2026-08-22 09:53 UTCEG score recompute
  40. 2026-08-22 09:53 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  41. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  42. 2026-08-21 05:29 UTCEG score recompute
  43. 2026-08-21 05:29 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  44. 2026-08-20 22:56 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  45. 2026-08-20 07:00 UTCEG score recompute
  46. 2026-08-20 07:00 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  47. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  48. 2026-08-19 01:12 UTCEG score recompute
  49. 2026-08-19 01:12 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  50. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  51. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  52. 2026-08-17 12:55 UTCEG score recompute
  53. 2026-08-17 12:55 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  54. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  55. 2026-08-16 14:26 UTCEG score recompute
  56. 2026-08-16 14:26 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  57. 2026-08-16 02:15 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  58. 2026-08-15 15:57 UTCEG score recompute
  59. 2026-08-15 15:57 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  60. 2026-08-15 01:31 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  61. 2026-08-14 17:28 UTCEG score recompute
  62. 2026-08-14 17:28 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  63. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  64. 2026-08-13 18:41 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  65. 2026-08-12 20:12 UTCEG score recompute
  66. 2026-08-12 20:12 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  67. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  68. 2026-08-11 21:43 UTCEG score recompute
  69. 2026-08-11 21:43 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  70. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  71. 2026-08-10 23:14 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5
  72. 2026-08-10 00:44 UTCEG score recompute
  73. 2026-08-10 00:44 UTCGHSA enrichmentGHSA-89v8-3927-wfcg · GitHub CVSS 6.5

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-6330?
CVE-2026-6330 is a medium-severity vulnerability; its CVE record was published on June 25, 2026. The ML-KEM ARM64 NEON ciphertext comparison only compares half of the input, breaking the Fujisaki-Okamoto transform's implicit rejection and weakening IND-CCA2 security on that code path. The constant-time comparison effectively ignored part of the re-encrypted ciphertext, so a decapsulating party…
When was the CVE record for CVE-2026-6330 published?
The CVE record for CVE-2026-6330 was published on June 25, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of June 27, 2026; the record at its source may have been updated since.
Is CVE-2026-6330 actively exploited?
CVE-2026-6330 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-6330?
CVE-2026-6330 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-6330?
A fix for CVE-2026-6330 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2026-6330 are linked in the Vendor Advisories panel on this page.

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