CVE-2025-11935

published 2025-11-21

CVE-2025-11935: With TLS 1.3 pre-shared key (PSK) a malicious or faulty server could ignore the request for PFS (perfect forward secrecy) and the client would continue on with…

Priority P3 45 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C H I N A N

With TLS 1.3 pre-shared key (PSK) a malicious or faulty server could ignore the request for PFS (perfect forward secrecy) and the client would continue on with the connection using PSK without PFS. This happened when a server responded to a ClientHello containing psk_dhe_ke without a key_share extension. The re-use of an authenticated PSK connection that on the clients side unexpectedly did not have PFS, reduces the security of the connection.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
debian	wolfssl	< wolfssl 5.8.4-1 (forky)	wolfssl 5.8.4-1 (forky)
msrc	azl3_mariadb_10.11.11-1_on_azure_linux_3.0	—	—
msrc	cbl2_mariadb_10.6.21-1_on_cbl_mariner_2.0	—	—
wolfssl	wolfssl	>= 0 < 5.8.4-1	5.8.4-1
wolfssl	wolfssl	>= 3.12.0 < 5.8.4	5.8.4
wolfssl	wolfssl	>= 5.8.2 < 5.8.4	5.8.4

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd v4.0 6.3 MEDIUM CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/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

osv 6.3 MEDIUM

vendor_msrc 7.5 HIGH

vendor_debian 6.3 MEDIUM

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CWE-326