CVSS 3.1
7.8 highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HCVE-2021-3404
High (7.8). EPSS 1.9% chance of exploitation in the next 30 days.
In ytnef 1.9.3, the SwapWord function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a heap buffer overflow which can be triggered via a crafted file.
Severity
- EPSS
- 1.9% chance of exploitation in the next 30 days; higher than 80% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-787, CWE-119
- Published
- Modified
- Record from
- the NVD, synced
Affected
- fedoraproject:fedora
- redhat:enterprise_linux
- ytnef_project:ytnef