CVE-2026-81687 — openssl_encrypt before 1.4.9 Denial of Service via KDF
openssl_encrypt versions before 1.4.9 fail to enforce a time ceiling on key derivation function iteration counts specified in file metadata. Attackers can craft files with extre…
Published: 2026-08-27 · CVSS: 8.7 · CVSS 4.0
openssl_encrypt versions before 1.4.9 fail to enforce a time ceiling on key derivation function iteration counts specified in file metadata. Attackers can craft files with extremely high KDF iteration counts to consume CPU resources for unbounded periods before password verification occurs.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7