Buffer overflow in N/a

CVE-2026-75421

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

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.002 (4.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-75421: held from 0.001 to 0.002.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-75421?
CVE-2026-75421 is a medium-severity vulnerability in N/a, classified under Stack-based Buffer Overflow. CVSS score: 4.0/10. Published 2026-08-25.
How severe is CVE-2026-75421?
Medium severity. CVSS v3 base score is 4.0 out of 10.