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openssl: openssl: Denial of Service via race condition in certificate extension caching

🗓️ 23 Sep 2026 11:45:06Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 7 Views

Unauthenticated DoS in OpenSSL via race condition in certificate extension caching.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
freebsd
FreeBSD
OpenSSL -- Multiple vulnerabilities
29 Sep 202600:00
–freebsd
circl
Circl
CVE-2026-84783
29 Sep 202619:46
–circl
cve
CVE
CVE-2026-84783
29 Sep 202615:32
–cve
cvelist
Cvelist
CVE-2026-84783 Use-After-Free in X.509 Extension Cache Under Concurrent Use
29 Sep 202615:32
–cvelist
debiancve
Debian CVE
CVE-2026-84783
29 Sep 202615:32
–debiancve
euvd
EUVD
EUVD-2026-89014
29 Sep 202615:32
–euvd
fedora
Fedora
[SECURITY] Fedora 44 Update: openssl-3.5.9-1.fc44
3 Oct 202601:12
–fedora
freebsd_advisory
FreeBSD Advisory
FreeBSD-SA-26:68.openssl
29 Sep 202600:00
–freebsd_advisory
nessus
Tenable Nessus
FreeBSD : OpenSSL -- Multiple vulnerabilities (0d183075-bcb5-11f1-b09d-8447094a420f)
1 Oct 202600:00
–nessus
nessus
Tenable Nessus
OpenSSL 4.0.0 < 4.0.3 Multiple Vulnerabilities
30 Sep 202600:00
–nessus
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Imagesanyaarch64openssl3-devel3.5.8-1.hum1openssl3-devel-3.5.8-1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64openssl3-devel3.5.8-1.hum1openssl3-devel-3.5.8-1.hum1.x86_64.rpm
Red Hat Hardened Imagesanyaarch64openssl3-devel-engine3.5.8-1.hum1openssl3-devel-engine-3.5.8-1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64openssl3-devel-engine3.5.8-1.hum1openssl3-devel-engine-3.5.8-1.hum1.x86_64.rpm
Red Hat Hardened Imagesanyaarch64openssl3-libs3.5.8-1.hum1openssl3-libs-3.5.8-1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64openssl3-libs3.5.8-1.hum1openssl3-libs-3.5.8-1.hum1.x86_64.rpm

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30 Sep 2026 06:13Current
6Medium risk
Vulners AI Score6
CVSS 3.17.5
EPSS0.00226
SSVC
7