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CVE-2026-58085

Missing MAC validation in wg(4) packet decryption

After dispatching a decrypt operation to OCF and receiving the result, the wg(4) driver failed to check whether the MAC verification step succeeded.  The driver thus silently accepted packets with an invalid Poly1305 authentication tag.

A remote attacker who can send UDP packets to a WireGuard endpoint, and who can guess the bounds of the receiver's replay window, can inject forged or modified transport data packets into the tunnel.

A remote attacker who can intercept WireGuard packets bound for a FreeBSD host can modify the ciphertext and authenticated data without detection by the receiver.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerFreeBSD
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Produkt FreeBSD
Default Statusunknown
Version 15.1-RELEASE
Version < p2
Status affected
Version 15.0-RELEASE
Version < p12
Status affected
Version 14.4-RELEASE
Version < p8
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.18% 0.08
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
CWE-347 Improper Verification of Cryptographic Signature

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

https://security.freebsd.org/advisories/FreeBSD-SA-26:52.if_wg.asc