CVE catalog
CVE-2021-3404
libytnef: CVE-2021-3404
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.94% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libytnef | sid | 2.1.2-1 | fixed |
| Debian | libytnef | forky | 2.1.2-1 | fixed |
| Debian | libytnef | trixie | 2.1.2-1 | fixed |
| Debian | libytnef | bookworm | 2.0-1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libytnef | source | sid | 1.9.3-3 | not yet assigned | Not reported | [982596] |
| Debian | libytnef | source | forky | 1.9.3-3 | not yet assigned | Not reported | [982596] |
| Debian | libytnef | source | trixie | 1.9.3-3 | not yet assigned | Not reported | [982596] |
| Debian | libytnef | source | bookworm | 1.9.3-3 | not yet assigned | Not reported | [982596] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libytnef0]Fixed
Source package: [libytnef]
Details (2)
2.0-1+b1· amd64 · bookwormFixed · Fixed:
1.9.3-3dsa · libytnef · debian · bookworm; dsa · libytnef · debian · 12
2.0-1+b1· arm64 · bookwormFixed · Fixed:
1.9.3-3dsa · libytnef · debian · bookworm; dsa · libytnef · debian · 12
- [libytnef0-dev]Fixed
Source package: [libytnef]
Details (2)
2.0-1+b1· amd64 · bookwormFixed · Fixed:
1.9.3-3dsa · libytnef · debian · bookworm; dsa · libytnef · debian · 12
2.0-1+b1· arm64 · bookwormFixed · Fixed:
1.9.3-3dsa · libytnef · debian · bookworm; dsa · libytnef · debian · 12
- [ytnef-tools]Fixed
Source package: [libytnef]
Details (2)
2.0-1+b1· amd64 · bookwormFixed · Fixed:
1.9.3-3dsa · libytnef · debian · bookworm; dsa · libytnef · debian · 12
2.0-1+b1· arm64 · bookwormFixed · Fixed:
1.9.3-3dsa · libytnef · debian · bookworm; dsa · libytnef · debian · 12
[Debian 13 (Trixie)]
- [libytnef0]Fixed
Source package: [libytnef]
Details (2)
2.1.2-1+b2· amd64 · trixieFixed · Fixed:
1.9.3-3dsa · libytnef · debian · 13
2.1.2-1+b2· arm64 · trixieFixed · Fixed:
1.9.3-3dsa · libytnef · debian · 13
- [libytnef0-dev]Fixed
Source package: [libytnef]
Details (2)
2.1.2-1+b2· amd64 · trixieFixed · Fixed:
1.9.3-3dsa · libytnef · debian · 13
2.1.2-1+b2· arm64 · trixieFixed · Fixed:
1.9.3-3dsa · libytnef · debian · 13
- [ytnef-tools]Fixed
Source package: [libytnef]
Details (2)
2.1.2-1+b2· amd64 · trixieFixed · Fixed:
1.9.3-3dsa · libytnef · debian · 13
2.1.2-1+b2· arm64 · trixieFixed · Fixed:
1.9.3-3dsa · libytnef · debian · 13
Observed: