CVE-2026-108266 Privasys rustls - Man-in-the-Middle

Privasys rustls before v0.8.1 contains a replay attack vulnerability caused by RA-TLS challenge certificates binding quote ReportData to public key and client nonce but not active TLS session, letting attackers relay genuine quotes to impersonate attested enclaves, exploit requires attacker to obtain enclave TLS private key.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
EPSS
0.12% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Man-in-the-Middle
Impact
Man In The Middle
CVSS vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
9 October 2026
Updated
15 October 2026
Weakness
CWE-346

Vendor fix

Update to version privasys-v0.8.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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