CVE catalog
CVE-2021-3405
libebml: CVE-2021-3405
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.73% · Oct 25, 2026
A flaw was found in libebml before 1.4.2. A heap overflow bug exists in the implementation of EbmlString::ReadData and EbmlUnicodeString::ReadData in libebml.
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 | libebml | sid | 1.4.7-2 | fixed |
| Debian | libebml | forky | 1.4.7-2 | fixed |
| Debian | libebml | trixie | 1.4.5-1 | fixed |
| Debian | libebml | bookworm | 1.4.4-1+deb12u1 | fixed |
| Ubuntu | libebml | 25.10 | 1.4.5-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libebml | source | sid | 1.4.2-1 | not yet assigned | Not reported | [982597] |
| Debian | libebml | source | forky | 1.4.2-1 | not yet assigned | Not reported | [982597] |
| Debian | libebml | source | trixie | 1.4.2-1 | not yet assigned | Not reported | [982597] |
| Debian | libebml | source | bookworm | 1.4.2-1 | not yet assigned | Not reported | [982597] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libebml5]Fixed
Source package: [libebml]
Details (2)
1.4.4-1+deb12u1· amd64 · bookwormFixed · Fixed:
1.4.2-1dsa · libebml · debian · bookworm; dsa · libebml · debian · 12
1.4.4-1+deb12u1· arm64 · bookwormFixed · Fixed:
1.4.2-1dsa · libebml · debian · bookworm; dsa · libebml · debian · 12
- [libebml-dev]Fixed
Source package: [libebml]
Details (2)
1.4.4-1+deb12u1· amd64 · bookwormFixed · Fixed:
1.4.2-1dsa · libebml · debian · bookworm; dsa · libebml · debian · 12
1.4.4-1+deb12u1· arm64 · bookwormFixed · Fixed:
1.4.2-1dsa · libebml · debian · bookworm; dsa · libebml · debian · 12
[Debian 13 (Trixie)]
- [libebml5]Fixed
Source package: [libebml]
Details (2)
1.4.5-1+b1· amd64 · trixieFixed · Fixed:
1.4.2-1dsa · libebml · debian · 13
1.4.5-1+b1· arm64 · trixieFixed · Fixed:
1.4.2-1dsa · libebml · debian · 13
- [libebml-dev]Fixed
Source package: [libebml]
Details (2)
1.4.5-1+b1· amd64 · trixieFixed · Fixed:
1.4.2-1dsa · libebml · debian · 13
1.4.5-1+b1· arm64 · trixieFixed · Fixed:
1.4.2-1dsa · libebml · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2024_10937-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-3405]
- [https://osv.dev/vulnerability/DLA-2629-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-3405]
- [https://security-tracker.debian.org/tracker/CVE-2021-3405]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]