Vulnerability · Published Aug 11, 2026 · Assigned by certcc
CVE-2026-6726An information leakage vulnerability in the TCG TPM 2.0 reference code.
High 7.9
In plain English
A high-severity security flaw in TPM2.0 from Trusted Computing Group. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
An information leakage vulnerability was reported in the TCG TPM 2.0 reference code that could allow a local attacker with elevated privileges to obtain a credential from a TPM-aware CA for a falsified TPM key (such as an Attestation Key, DevID Key or TLS authentication key) and falsify other TPM 2.0 attestations with this key. See also TCG VRT0010.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libtpms | 0.9.1-1 | DEBIAN-CVE-2026-6726 |
| Debian:13 | libtpms | 0.9.1-1 | DEBIAN-CVE-2026-6726 |
| Debian:14 | libtpms | 0.9.1-1 | DEBIAN-CVE-2026-6726 |
| Ubuntu:22.04:LTS | libtpms | no fix listed | UBUNTU-CVE-2026-6726 |
| Ubuntu:24.04:LTS | libtpms | no fix listed | UBUNTU-CVE-2026-6726 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Trusted Computing Group | TPM2.0 | 0 – through v184 |
Weakness: CWE-704 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N