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CVE-2021-46873

17
FAUCET Score

CVE-2021-46873 affects WireGuard, specifically version 0.5.3 on Windows, due to its insufficient handling of manipulated system times. An attacker could exploit this by setting a victim's system time to a future date, potentially rendering a static private key permanently unusable. This vulnerability has a CVSS score of 5.3 (Medium), indicating a low impact on availability and requiring no user interaction or privileges for exploitation. There is currently no evidence of active exploitation, nor are there publicly available exploit codes like Metasploit or ExploitDB modules. Community discussion is minimal, with only one mention found.

Impacted Technologies

VendorProductVersion(s)CPE
0.5.3CPE matchmatch criteria
cpe:2.3:a:wireguard:wireguard:0.5.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.47%
Probability of exploitation in next 30 days
EPSS Percentile
38.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0047 is in the 24th percentile among its peer group of 23,703 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.zx2c4.com / pipermail/wireguard/2021-August/006916.html
Mailing ListThird Party Advisory