CVE catalog
CVE-2026-21444
libtpms: CVE-2026-21444
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.08% · Oct 25, 2026
libtpms, a library that provides software emulation of a Trusted Platform Module, has a flaw in versions 0.10.0 and 0.10.1. The commonly used integration of libtpms with OpenSSL 3.x contained a vulnerability related to the returned IV (initialization vector) when certain symmetric ciphers were used. Instead of returning the last IV it returned the initial IV to the caller, thus weakening the subsequent encryption and decryption steps. The highest threat from this vulnerability is to data confidentiality. Version 0.10.2 fixes the issue. No known workarounds are available.
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 | libtpms | sid | 0.10.2-5 | fixed |
| Debian | libtpms | forky | 0.10.2-5 | fixed |
| Debian | libtpms | trixie | 0.9.2-3.2 | not affected |
| Debian | libtpms | bookworm | 0.9.2-3.1+deb12u1 | not affected |
| Debian | libtpms | bookworm-security | 0.9.2-3.1~deb12u1 | not affected |
| Opensuse | libtpms | tumbleweed | 0.10.2-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libtpms | source | sid | 0.10.2-1 | not yet assigned | Not reported | [1124557] |
| Debian | libtpms | source | forky | 0.10.2-1 | not yet assigned | Not reported | [1124557] |
| Debian | libtpms | source | trixie | Not affected | unimportant | Not reported | [1124557] |
| Debian | libtpms | source | bookworm | Not affected | unimportant | Not reported | [1124557] |
| Opensuse | libtpms | rpm | tumbleweed | 0.10.2-1.1 | Not reported | OPENSUSE-SU-2026:10422-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [libtpms0]Unknown
Source package: [libtpms]
Details (1)
0.10.2-1.4· x86_64 · tumbleweedUnknown · Fixed:
0.10.2-1.1Version impact unknown
dsa · libtpms · opensuse · tumbleweed
- [libtpms-devel]Unknown
Source package: [libtpms]
Details (1)
0.10.2-1.4· x86_64 · tumbleweedUnknown · Fixed:
0.10.2-1.1Version impact unknown
dsa · libtpms · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [libtpms0]Not affected
Source package: [libtpms]
Details (4)
0.9.2-3.1+deb12u1· amd64 · bookwormNot affected
dsa · libtpms · debian · bookworm
0.9.2-3.1+deb12u1· arm64 · bookwormNot affected
dsa · libtpms · debian · bookworm
0.9.2-3.1~deb12u1· amd64 · bookworm-securityNot affected
dsa · libtpms · debian · bookworm
0.9.2-3.1~deb12u1· arm64 · bookworm-securityNot affected
dsa · libtpms · debian · bookworm
- [libtpms-dev]Not affected
Source package: [libtpms]
Details (4)
0.9.2-3.1+deb12u1· amd64 · bookwormNot affected
dsa · libtpms · debian · bookworm
0.9.2-3.1+deb12u1· arm64 · bookwormNot affected
dsa · libtpms · debian · bookworm
0.9.2-3.1~deb12u1· amd64 · bookworm-securityNot affected
dsa · libtpms · debian · bookworm
0.9.2-3.1~deb12u1· arm64 · bookworm-securityNot affected
dsa · libtpms · debian · bookworm
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10422-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-21444]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-21444]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10422-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-21444]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21444.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]