CVE-2026-20215

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-01. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 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

A fix is available — apply it.

A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device. This vulnerability is due to improper boundary checks for content in 7z files during scanning, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted file that contains 7z content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
40%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 9, 2026

Advisory Details (1)

Auto-updated Jul 6, 2026
No patch confirmed yet.
generic

ClamAV Vulnerabilities Affecting Cisco Products: July 2026

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-88cFYyxR

Vendor Advisories for CVE-2026-20215(3)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibclamav12 (1.5.3+dfsg-0ubuntu0.26.04.1) @ resolute2026-07-26ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 18× in last 7d / 88× 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. 2026-07-27 02:23 UTCEG score recompute
  2. 2026-07-27 02:23 UTCVendor advisory
  3. 2026-07-27 02:23 UTCGHSA enrichment
  4. 2026-07-26 14:54 UTCEPSS rescore
  5. 2026-07-26 14:54 UTCEPSS rescore
  6. 2026-07-26 13:16 UTCEG score recompute
  7. 2026-07-26 13:16 UTCVendor advisory
  8. 2026-07-26 13:16 UTCGHSA enrichment
  9. 2026-07-25 14:17 UTCEPSS rescore
  10. 2026-07-25 14:17 UTCEPSS rescore
  11. 2026-07-24 14:17 UTCEPSS rescore
  12. 2026-07-23 14:18 UTCEPSS rescore
  13. 2026-07-23 14:18 UTCEPSS rescore
  14. 2026-07-23 03:06 UTCEG score recompute
  15. 2026-07-22 14:08 UTCEPSS rescore
  16. 2026-07-21 15:24 UTCEPSS rescore
  17. 2026-07-21 15:24 UTCEPSS rescore
  18. 2026-07-20 17:08 UTCEPSS rescore
  19. 2026-07-19 14:31 UTCEPSS rescore
  20. 2026-07-19 14:31 UTCEPSS rescore
  21. 2026-07-19 02:29 UTCEPSS rescore
  22. 2026-07-19 02:28 UTCEPSS rescore
  23. 2026-07-18 10:04 UTCEPSS rescore
  24. 2026-07-18 10:04 UTCEPSS rescore
  25. 2026-07-17 02:35 UTCVendor advisory
Show 63 more
  1. 2026-07-17 02:35 UTCGHSA enrichment
  2. 2026-07-16 17:03 UTCEPSS rescore
  3. 2026-07-16 17:03 UTCEPSS rescore
  4. 2026-07-16 13:29 UTCVendor advisory
  5. 2026-07-16 13:28 UTCGHSA enrichment
  6. 2026-07-16 00:14 UTCVendor advisory
  7. 2026-07-16 00:14 UTCGHSA enrichment
  8. 2026-07-15 16:57 UTCEPSS rescore
  9. 2026-07-15 16:57 UTCEPSS rescore
  10. 2026-07-15 11:08 UTCVendor advisory
  11. 2026-07-15 11:07 UTCGHSA enrichment
  12. 2026-07-15 02:00 UTCEPSS rescore
  13. 2026-07-15 02:00 UTCEPSS rescore
  14. 2026-07-14 22:01 UTCVendor advisory
  15. 2026-07-14 22:00 UTCGHSA enrichment
  16. 2026-07-14 08:53 UTCVendor advisory
  17. 2026-07-14 08:53 UTCGHSA enrichment
  18. 2026-07-13 22:30 UTCEPSS rescore
  19. 2026-07-13 19:46 UTCVendor advisory
  20. 2026-07-13 19:46 UTCGHSA enrichment
  21. 2026-07-13 06:40 UTCVendor advisory
  22. 2026-07-13 06:39 UTCGHSA enrichment
  23. 2026-07-13 06:13 UTCEPSS rescore
  24. 2026-07-13 06:13 UTCEPSS rescore
  25. 2026-07-12 17:23 UTCVendor advisory
  26. 2026-07-12 17:23 UTCGHSA enrichment
  27. 2026-07-12 05:46 UTCEPSS rescore
  28. 2026-07-12 05:46 UTCEPSS rescore
  29. 2026-07-12 04:17 UTCVendor advisory
  30. 2026-07-12 04:17 UTCGHSA enrichment
  31. 2026-07-11 15:11 UTCVendor advisory
  32. 2026-07-11 15:11 UTCGHSA enrichment
  33. 2026-07-11 08:27 UTCEPSS rescore
  34. 2026-07-11 02:04 UTCGHSA enrichment
  35. 2026-07-10 12:57 UTCGHSA enrichment
  36. 2026-07-09 23:50 UTCVendor advisory
  37. 2026-07-09 23:50 UTCGHSA enrichment
  38. 2026-07-09 19:10 UTCEPSS rescore
  39. 2026-07-09 10:44 UTCGHSA enrichment
  40. 2026-07-08 21:29 UTCVendor advisory
  41. 2026-07-08 21:29 UTCGHSA enrichment
  42. 2026-07-08 15:15 UTCEPSS rescore
  43. 2026-07-08 15:15 UTCEPSS rescore
  44. 2026-07-08 08:23 UTCGHSA enrichment
  45. 2026-07-07 19:18 UTCGHSA enrichment
  46. 2026-07-07 13:46 UTCEPSS rescore
  47. 2026-07-07 06:10 UTCGHSA enrichment
  48. 2026-07-06 17:04 UTCGHSA enrichment
  49. 2026-07-06 16:27 UTCEPSS rescore
  50. 2026-07-06 03:56 UTCGHSA enrichment
  51. 2026-07-06 02:23 UTCEPSS rescore
  52. 2026-07-05 14:50 UTCGHSA enrichment
  53. 2026-07-05 02:30 UTCEPSS rescore
  54. 2026-07-05 02:30 UTCEPSS rescore
  55. 2026-07-05 01:43 UTCGHSA enrichment
  56. 2026-07-04 12:36 UTCGHSA enrichment
  57. 2026-07-04 06:31 UTCEPSS rescore
  58. 2026-07-03 23:30 UTCGHSA enrichment
  59. 2026-07-03 10:25 UTCGHSA enrichment
  60. 2026-07-02 21:17 UTCGHSA enrichment
  61. 2026-07-02 08:11 UTCGHSA enrichment
  62. 2026-07-01 19:04 UTCEG score recompute
  63. 2026-07-01 19:04 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-20215?
CVE-2026-20215 is a high vulnerability published on July 1, 2026. A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device. This vulnerability is due to improper boundary checks for content in 7z files…
When was CVE-2026-20215 disclosed?
CVE-2026-20215 was first published in the National Vulnerability Database on July 1, 2026, with the most recent update on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20215 actively exploited?
CVE-2026-20215 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 60.1% of all scored CVEs.
What is the CVSS score of CVE-2026-20215?
CVE-2026-20215 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-20215?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20215, 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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