CVE-2025-3576 — Krb5: kerberos rc4-hmac-md5 checksum vulnerability enabling message spoofing via md5 collisions
A vulnerability in the MIT Kerberos implementation allows GSSAPI-protected messages using RC4-HMAC-MD5 to be spoofed due to weaknesses in the MD5 checksum design. If RC4 is pref…
Published: 2025-04-15 · CVSS: 5.9 · CVSS 3.1
A vulnerability in the MIT Kerberos implementation allows GSSAPI-protected messages using RC4-HMAC-MD5 to be spoofed due to weaknesses in the MD5 checksum design. If RC4 is preferred over stronger encryption types, an attacker could exploit MD5 collisions to forge message integrity codes. This may lead to unauthorized message tampering.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7