CVE Catalog

CVE-2026-42504

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.56%

43th percentile - higher than 43% of all known CVEs

Summary

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU resources.

Risk Assessment

The risk is a denial of service attack via specially crafted email or other MIME resource, potentially slowing or crashing the system.

Recommendation

Apply patches from the MIME-handling software vendor and implement limits on header processing.

Related vulnerabilities

Original NVD description (English source)

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS