Vulnerability in Microsoft Windows
CVE-2021-46873
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (38.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Microsoft Windows
- Wireguard — versions 0.5.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.zx2c4.com/pipermail/wireguard/2021-August/006916.html (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-46873?
- CVE-2021-46873 is a medium-severity vulnerability in Microsoft Windows, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.3/10. Published 2023-01-29.
- How severe is CVE-2021-46873?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-46873 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.