CVE-2025-21433

high-risk
Published 2025-07-08

Transient DOS when importing a PKCS#8-encoded RSA private key with a zero-sized modulus.

Do I need to act?

-
0.02% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.2/10 Medium
LOCAL / LOW complexity

Affected Vendors

53
/ 100
high-risk
Severity 20/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 33/34 · Critical