Technology · OpenSSL
OpenSSL vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 59 vulnerabilities in OpenSSL: 0 in the last 7 days and 10 in the last 90 days, 5 of them critical and 1 exploited in the wild. The most recent, CVE-2026-90439, was published on 15 September 2026.
- Last 7 days
- 0
- Last 90 days
- 10
- Critical, all time
- 5
- Exploited in the wild
- 1
About OpenSSL
A robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols.
Latest OpenSSL vulnerabilities
- CVE-2026-90439: NGINX Plus and Open Source HTTP/3 heap buffer overflow in TLS handshakemediumCVSS 6.5EPSS 0.4%
- CVE-2026-75803: OpenSSL ChaCha20-Poly1305 and AES-OCB authentication tag bypasscriticalCVSS 9.1EPSS 0.2%
- CVE-2026-63076: OpenSSL CMP password protection verification null pointer dereferencehighCVSS 7.5EPSS 1.8%
- CVE-2026-63075: OpenSSL QUIC memory exhaustion denial of servicehighCVSS 7.5EPSS 0.8%
- CVE-2026-63074: OpenSSL CMP unbounded certificate cache growthmediumCVSS 5.9EPSS 0.6%
- CVE-2026-63073: OpenSSL CMP response validation format stringcriticalCVSS 9.8EPSS 1.2%
- CVE-2026-63072: OpenSSL heap overflow in CMS key unwraphighCVSS 7.5EPSS 1.0%
- CVE-2026-54874: OpenSSL DTLS memory exhaustion in epoch bufferinghighCVSS 7.5EPSS 1.3%
- CVE-2026-18798: OpenSSL QUIC double free in QRX objecthighCVSS 7.5EPSS 1.5%
- CVE-2026-14457: OpenSSL NULL pointer dereference in RFC7250 Raw Public Key handlinghighCVSS 7.5EPSS 1.0%
- CVE-2026-9076: OpenSSL heap out-of-bounds read in CMS password-based decryptioninfoCVSS 3.7
- CVE-2026-7383: OpenSSL heap buffer overflow in ASN1_mbstring_ncopyhighCVSS 8.1
- CVE-2026-45447: OpenSSL use-after-free in PKCS7_verifyinfoCVSS 8.1
- CVE-2026-45446: OpenSSL authentication bypass in AES-SIV and AES-GCM-SIVinfoCVSS 0
- CVE-2026-45445: OpenSSL AES-OCB nonce reuse and forgery via EVP_Cipher one-shot APIinfoCVSS 0
- CVE-2026-42771: OpenSSL out-of-bounds read in X509_VERIFY_PARAM_set1_emailinfoCVSS 0
- CVE-2026-42770: OpenSSL private key recovery via DHX subgroup membership bypassinfoCVSS 3.7
- CVE-2026-42769: OpenSSL improper certificate validation in CMP root CA updateinfoCVSS 3.1
- CVE-2026-42768: OpenSSL Bleichenbacher side-channel in CMS and PKCS7 decryptioninfoCVSS 3.7
- CVE-2026-42767: OpenSSL NULL pointer dereference in CMP clientinfoCVSS 0
- CVE-2026-42766: OpenSSL NULL pointer dereference in CMS decryptioninfoCVSS 0
- CVE-2026-42765: OpenSSL NULL pointer dereference in certificate verificationinfoCVSS 3.7
- CVE-2026-42764: OpenSSL NULL pointer dereference in QUIC server initial packet handlinginfoCVSS 5.3
- CVE-2026-35188: OpenSSL double-free in TLS OCSP stapling response handlinginfo
- CVE-2026-34183: OpenSSL memory exhaustion in QUIC PATH_CHALLENGE handlerinfoCVSS 5.3
Most severe OpenSSL vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2014-0160: OpenSSL Information Disclosure Vulnerabilitycriticalexploited in the wildCVSS 7.5
- CVE-2026-63073: OpenSSL CMP response validation format stringcriticalCVSS 9.8EPSS 1.2%
- CVE-2026-31789: OpenSSL heap buffer overflow in buf2hex conversioncriticalCVSS 9.8EPSS 0.2%
- CVE-2026-75803: OpenSSL ChaCha20-Poly1305 and AES-OCB authentication tag bypasscriticalCVSS 9.1EPSS 0.2%
- CVE-2024-5535: OpenSSL buffer overread in SSL_select_next_protocriticalCVSS 9.1
- CVE-2025-15467: OpenSSL stack buffer overflow in CMS AEAD parameter parsinghighCVSS 8.8EPSS 2.9%
- CVE-2026-28387: OpenSSL use-after-free in DANE TLSA-based authenticationhighCVSS 8.1EPSS 0.8%
- CVE-2026-7383: OpenSSL heap buffer overflow in ASN1_mbstring_ncopyhighCVSS 8.1
- CVE-2026-63076: OpenSSL CMP password protection verification null pointer dereferencehighCVSS 7.5EPSS 1.8%
- CVE-2026-18798: OpenSSL QUIC double free in QRX objecthighCVSS 7.5EPSS 1.5%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 9 | 2 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 1 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/openssl.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "OpenSSL vulnerabilities", https://junglewise.ai/threats/technologies/openssl, 26 September 2026.