CVE-2026-75421

UNRATEDCVSS · not yet scoredTrending — 5 sources updated this week
—
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS v2: —Exploit: None knownExposed: 0

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

aria2 <=1.37.0 has a stack-buffer-underflow vulnerability in the IOFile::getLine() function.

CVSS v3
—
EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
—
EG Risk
—
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 25, 2026

References (2)

Vendor Advisories for CVE-2026-75421(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 10× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 00:20 UTCEG score recompute
  3. 2026-08-29 00:19 UTCGHSA enrichment
  4. 2026-08-28 21:42 UTCEPSS rescore
  5. 2026-08-27 14:25 UTCEPSS rescore
  6. 2026-08-26 14:47 UTCEPSS rescore
  7. 2026-08-25 21:36 UTCGHSA enrichment
  8. 2026-08-25 21:25 UTCNVD update
  9. 2026-08-25 21:05 UTCEG score recompute
  10. 2026-08-25 21:04 UTCMITRE cvelistV5first tracked

Frequently asked(4)

What is CVE-2026-75421?
CVE-2026-75421 is a publicly disclosed vulnerability published on August 25, 2026. aria2 <=1.37.0 has a stack-buffer-underflow vulnerability in the IOFile::getLine() function.
When was CVE-2026-75421 disclosed?
CVE-2026-75421 was first published in the National Vulnerability Database on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75421 actively exploited?
CVE-2026-75421 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 95.0% of all scored CVEs.
How do I remediate CVE-2026-75421?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-75421, 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-2026-75421

Explore →

Is Your Infrastructure Affected by CVE-2026-75421?

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

Start Free Scan →Browse All CVEs