CVE-2021-46873

MEDIUM 5.3CVE-2021-46873 · Published 29/01/2023 · updated 17/06/2026

In short

CVE-2021-46873 is a MEDIUM (CVSS 5.3) vulnerability affecting wireguard (wireguard).
Chance of exploitation in the next 30 days (EPSS): 0.47%, higher than 41.0% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
wireguard wireguard	`= 0.5.3`	No fix yet

Description

WireGuard, such as WireGuard 0.5.3 on Windows, does not fully account for the possibility that an adversary might be able to set a victim's system time to a future value, e.g., because unauthenticated NTP is used. This can lead to an outcome in which one static private key becomes permanently useless.

References

lists.zx2c4.com/pipermail/wireguard/2021-August/006916.html · Mailing List

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