CVE-2021-34123

9.8 criticalEPSS 0.7%

Critical (9.8) in atasm project atasm. EPSS 0.7% chance of exploitation in the next 30 days.

An issue was discovered on atasm, version 1.09. A stack-buffer-overflow vulnerability in function aprintf() in asm.c allows attackers to execute arbitrary code on the system via a crafted file.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)
CWE: CWE-787
Published: 2023-07-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

atasm_project:atasm

References

https://sourceforge.net/p/atasm/bugs/23/
https://sourceforge.net/p/atasm/bugs/23/

Check your stack JSON