High severity · published Oct 12, 2026
CVE-2026-108361
Privasys Intra-handshake attested TLS implementation is vulnerable to TOCTOU Attacks
7.2
CVSS
0.1%
EPSS
No
On KEV
Description
Privasys Remote Attestation TLS Clients provides multi-language utilities for verifying attested TLS connections. Before 0.9.1, an attacker with local access could modify workload code, data, and configuration at any time after successful connection establishment. Once Evidence was successfully appraised and the connection was established, there was a window of vulnerability from the establishment of the connection to the termination of the connection where an attacker could modify the state of the workload and platform at runtime on the TLS endpoint acting as the Attester. This vulnerability was possible because Privasys/ra-tls-clients performed attestation only once in the lifetime of the connection (at connection establishment time), and the verifying peer continued to believe that the state was the same as in the initial Evidence throughout, whereas it could be stale at some point in time. This vulnerability is fixed in 0.9.1.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 0% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RA
ra-tls-clients · Privasys
< 0.9.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-108361
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-108361
x_refsource_CONFIRM
https://github.com/Privasys/ra-tls-clients/security/advisories/GHSA-gg8q-mfhh-wrrc
x_refsource_MISC
https://github.com/Privasys/ra-tls-clients/commit/076074873117ee5ff35a7c39e02952c28de3df0c
x_refsource_MISC
https://github.com/Privasys/ra-tls-clients/commit/5ccfd778132e17cb54bb1a9c7b89d57fcfea59ec
x_refsource_MISC
https://github.com/Privasys/ra-tls-clients/commit/b9114d772a636ad3307957dde4bb8afe70c9b40d
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