High 7.5Published Jun 12, 2015

CVE-2015-1789The X509_cmp_time function in crypto/x509/x509_vfy.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b allows remote attackers to cause a denial of service…

Updated under an hour ago (Nov 2, 2026, 1:40 AM ET)

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It affects openssl and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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The X509_cmp_time function in crypto/x509/x509_vfy.c in OpenSSL before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted length field in ASN1_TIME data, as demonstrated by an attack against a server that supports client authentication with a custom verification callback.

CVSS: 7.5 HIGH (v3.0, NVD)CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

openssl openssl openssl:openssl	through 0.9.8zf; 1.0.0; 1.0.0; 1.0.0; 1.0.0; 1.0.0; 1.0.0; 1.0.0a; and 37 more ranges	NVD
oracle sparc-opl_service_processor oracle:sparc-opl_service_processor	through 1121	NVD

References

References

http://fortiguard.com/advisory/openssl-vulnerabilities-june-2015
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10694
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10733
http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160436.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160647.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00023.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00024.html
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00026.html
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The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.