What’s Vulnerable › Vulnerabilities

CVE-2021-46873

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-01-29 · updated 2026-06-17
• Weakness: CWE-362

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.

Affected products

• Wireguard: 0.5.3

References

• https://lists.zx2c4.com/pipermail/wireguard/2021-August/006916.html
• https://lists.zx2c4.com/pipermail/wireguard/2021-August/006916.html

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