CVE-2026-20244

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-01. the CNA's CVSS baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:github_m, epss, ghsa
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.

A vulnerability in the DMG file format parser of ClamAV could allow an unauthenticated, remote...

A vulnerability in the DMG 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 DMG files during scanning, which may result in an integer overflow on 32-bit platforms only. An attacker could exploit this vulnerability by submitting a crafted file that contains DMG 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)
EPSS
30.9%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 1, 2026

Vendor Advisories for CVE-2026-20244(1)

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 29× in last 7d / 29× 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. 2026-07-07 01:18 UTCEG score recompute
  2. 2026-07-07 01:18 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 13:50 UTCEG score recompute
  5. 2026-07-06 13:50 UTCGHSA enrichment
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-06 02:22 UTCEG score recompute
  8. 2026-07-06 02:21 UTCGHSA enrichment
  9. 2026-07-05 14:53 UTCEG score recompute
  10. 2026-07-05 14:53 UTCGHSA enrichment
  11. 2026-07-05 03:26 UTCEG score recompute
  12. 2026-07-05 03:26 UTCGHSA enrichment
  13. 2026-07-05 02:30 UTCEPSS rescore
  14. 2026-07-05 02:30 UTCEPSS rescore
  15. 2026-07-04 15:58 UTCEG score recompute
  16. 2026-07-04 15:58 UTCGHSA enrichment
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-04 04:29 UTCEG score recompute
  19. 2026-07-04 04:29 UTCGHSA enrichment
  20. 2026-07-03 16:57 UTCEG score recompute
  21. 2026-07-03 16:57 UTCGHSA enrichment
  22. 2026-07-03 05:29 UTCEG score recompute
  23. 2026-07-03 05:29 UTCGHSA enrichment
  24. 2026-07-02 18:00 UTCEG score recompute
  25. 2026-07-02 18:00 UTCGHSA enrichment
Show 4 more
  1. 2026-07-02 06:33 UTCEG score recompute
  2. 2026-07-02 06:33 UTCGHSA enrichment
  3. 2026-07-01 19:04 UTCEG score recompute
  4. 2026-07-01 19:04 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-20244?
CVE-2026-20244 is a high vulnerability published on July 1, 2026. A vulnerability in the DMG file format parser of ClamAV could allow an unauthenticated, remote... A vulnerability in the DMG 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…
When was CVE-2026-20244 disclosed?
CVE-2026-20244 was first published in the National Vulnerability Database 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-2026-20244 actively exploited?
CVE-2026-20244 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 30.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-20244?
CVE-2026-20244 has a CVSS v4.0 base score of 7.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-20244?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20244, 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-2026-20244

Explore →

Is Your Infrastructure Affected by CVE-2026-20244?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs