OpenSSL 4.0.1
2026-06-10T08:52:15Z•801bac51df93bb2323c116d3dbfd35871fd7dd1e2d78aa48179f78070c2d14b2
aes-gcm-sivaes-ocbaes-sivasn.1avx-512buffer-overreadcmscryptographydouble-freeffcdhheap-overflownull-dereferenceocspopensslpkcs12pkcs7quicrsa-kemsecurity-patchuse-after-freevulnerability
What happened
OpenSSL published multiple releases (notably 4.0.1, 3.6.3, 3.5.7, 3.4.6, 3.0.21) on/around 2026-06-09 addressing a broad set of security vulnerabilities. Fixes include heap use-after-free (PKCS7_verify), CMS/AuthEnvelopedData forgery, QUIC issues (PATH_CHALLENGE unbounded growth and server initial NULL dereference), OCSP stapling double-free, AES-OCB IV handling, ASN.1 multibyte conversion buffer issues and over-reads, PKCS#12 PBMAC1/HMAC weaknesses, AES-GCM-SIV/AES-SIV tag processing, FFC-DH peer validation, and a variety of NULL dereferences and buffer overflows across modules. OpenSSL 4.0.0
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- openssl_releases
- Record identifier
- 801bac51df93bb2323c116d3dbfd35871fd7dd1e2d78aa48179f78070c2d14b2
- Enrichment time
- 2026-06-10T08:52:15Z
- AI-assisted enrichment
- Yes
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