CVE-2026-75421 Memory corruption in n/a
A stack-buffer-underflow in aria2 allows attackers to execute arbitrary code or cause denial of service via crafted input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-75421?
CVE-2026-75421 is a medium-severity memory corruption vulnerability in n/a, published on 25 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
aria2 <=1.37.0 has a stack-buffer-underflow vulnerability in the IOFile::getLine() function.
Weakness: CWE-121
Which versions are affected by CVE-2026-75421?
Linux distribution packages (2)
aria2 openSUSE:Leap 16.0 | All versions | 1.37.0-bp160.2.1 |
aria2 openSUSE:Tumbleweed | All versions | 1.37.0-3.1 |
How do I fix CVE-2026-75421?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-75421 being exploited?
There is no known exploitation of CVE-2026-75421 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-75421, GHSA-8w4g-6qwv-67hv, UBUNTU-CVE-2026-75421, openSUSE-SU-2026:11843-1, openSUSE-SU-2026:21997-1.