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CVE-2015-1789

58
FAUCET Score

CVE-2015-1789 is a denial-of-service vulnerability in the X509_cmp_time function of OpenSSL versions prior to 0.9.8zg, 1.0.0s, 1.0.1n, and 1.0.2b, affecting various OpenSSL and Oracle products. A remote attacker can trigger an out-of-bounds read and application crash by sending crafted ASN1_TIME data, particularly against servers using custom client authentication callbacks. This vulnerability has a CVSS score of 7.5 (High), indicating a network-based attack with low complexity and high impact on availability. While there is no evidence of active exploitation, public exploit code, or Metasploit/Nuclei modules, the vulnerability has received some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9.8zfCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
1.0.0CPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.0:*:*:*:*:*:*:*
1.0.0CPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.0:beta1:*:*:*:*:*:*
1.0.0CPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.0:beta2:*:*:*:*:*:*
1.0.0CPE matchmatch criteria
cpe:2.3:a:openssl:openssl:1.0.0:beta3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
74.48%
Probability of exploitation in next 30 days
EPSS Percentile
99.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.7448 is in the 99th percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl-0:0.9.8e-36.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openssl-0:1.0.1e-30.el6_6.11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openssl-1:1.0.1e-42.ael7b_1.8
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: openssl
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openssl098e
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: openssl097a
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: openssl098e

Vendor Advisories (1)

redhatCVE-2015-1789Moderate

OpenSSL: out-of-bounds read in X509_cmp_time

Jun 11, 2015

References

fortiguard.com / advisory/openssl-vulnerabilities-june-2015
ftp.netbsd.org / pub/NetBSD/security/advisories/NetBSD-SA2015-008.txt.asc
kb.juniper.net / InfoCenter/index
kb.juniper.net / InfoCenter/index
lists.apple.com / archives/security-announce/2015/Aug/msg00001.html
lists.fedoraproject.org / pipermail/package-announce/2015-June/160436.html
lists.fedoraproject.org / pipermail/package-announce/2015-June/160647.html
lists.opensuse.org / opensuse-security-announce/2015-06/msg00023.html
lists.opensuse.org / opensuse-security-announce/2015-06/msg00024.html
lists.opensuse.org / opensuse-security-announce/2015-06/msg00026.html
lists.opensuse.org / opensuse-security-announce/2015-07/msg00003.html
lists.opensuse.org / opensuse-security-announce/2015-07/msg00004.html
lists.opensuse.org / opensuse-security-announce/2015-07/msg00005.html
lists.opensuse.org / opensuse-security-announce/2015-07/msg00006.html
lists.opensuse.org / opensuse-security-announce/2015-07/msg00007.html
lists.opensuse.org / opensuse-security-announce/2015-07/msg00037.html
lists.opensuse.org / opensuse-security-announce/2016-03/msg00011.html
marc.info
marc.info
marc.info
rhn.redhat.com / errata/RHSA-2015-1115.html
rhn.redhat.com / errata/RHSA-2015-1197.html
bto.bluecoat.com / security-advisory/sa98
cert-portal.siemens.com / productcert/pdf/ssa-412672.pdf
github.com / openssl/openssl/commit/f48b83b4fb7d6689584cf25f61ca63a4891f5b11
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
kc.mcafee.com / corporate/index
openssl.org / news/secadv/20150611.txt
security.gentoo.org / glsa/201506-02
support.apple.com / kb/HT205031
support.citrix.com / article/CTX216642
arista.com / en/support/advisories-notices/security-advisories/1144-security-advisory-11
openssl.org / news/secadv_20150611.txt
Vendor Advisory
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20150612-openssl
debian.org / security/2015/dsa-3287
fortiguard.com / advisory/2015-06-11-fortinet-vulnerability-openssl-vulnerabilities-june-2015
fortiguard.com / advisory/openssl-vulnerabilities-june-2015
oracle.com / technetwork/security-advisory/cpuapr2016v3-2985753.html
oracle.com / technetwork/security-advisory/cpujul2016-2881720.html
oracle.com / technetwork/security-advisory/cpujul2017-3236622.html
oracle.com / technetwork/security-advisory/cpuoct2016-2881722.html
oracle.com / technetwork/security-advisory/cpuoct2017-3236626.html
oracle.com / technetwork/topics/security/bulletinjul2015-2511963.html
oracle.com / technetwork/topics/security/cpujan2016-2367955.html
oracle.com / technetwork/topics/security/cpuoct2015-2367953.html
securityfocus.com / bid/75156
securityfocus.com / bid/91787
securitytracker.com / id/1032564
ubuntu.com / usn/USN-2639-1