CVE-2015-5262

http/conn/ssl/SSLConnectionSocketFactory.java in Apache HttpComponents HttpClient before 4.3.6 ignores the http.socket.timeout configuration setting during an SSL handshake, which allows remote attackers to cause a denial of service (HTTPS call hang) via unspecified vectors.

Published: 2015-10-27 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2015-5262 is rated Moderate Risk (56.1/100): CVSS Medium severity, with high exploitation likelihood (EPSS 19.31%, 97th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +15.00% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-5262

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 4.31% 19.31% +15.00%
2 2026-06-13 1.20% 4.31% +3.11%
3 2026-05-13 1.20%

Full EPSS history (21 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-5262

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
8.6 2.9 [email protected]

Weakness enumeration for CVE-2015-5262

GitHub Security Advisory for CVE-2015-5262

GHSA-fmj5-wv96-r2ch · Severity: medium · Ecosystem: maven — Denial of service vulnerability in org.apache.httpcomponents:httpclient

OS Trackers for CVE-2015-5262

vendor priority summary link
debian low CVE-2015-5262 low priority: Debian including 2 source packages (commons-httpclient, httpcomponents-client), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. https://security-tracker.debian.org/tracker/CVE-2015-5262
redhat low https://access.redhat.com/security/cve/CVE-2015-5262
suse high https://www.suse.com/security/cve/CVE-2015-5262/
ubuntu medium CVE-2015-5262 medium priority: Ubuntu including 2 source packages (commons-httpclient, httpcomponents-client), 36 status rows across 18 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): released 19, not-affected 15, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2015-5262

Affected software / configurations for CVE-2015-5262

Vendor Product Version Raw CPE
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 15.04 cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
fedoraproject fedora 21 cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
fedoraproject fedora 22 cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
fedoraproject fedora 23 cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
apache httpclient >= 4.3, <= 4.3.5 cpe:2.3:a:apache:httpclient:*:*:*:*:*:*:*:*

References for CVE-2015-5262

URL Tags
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/167962.html Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/167999.html Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168030.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00032.html
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00033.html
http://svn.apache.org/viewvc?view=revision&revision=1626784 Vendor Advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
http://www.securitytracker.com/id/1033743 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-2769-1 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1261538 Issue Tracking Third Party Advisory
https://issues.apache.org/jira/browse/HTTPCLIENT-1478 Vendor Advisory
https://jenkins.io/security/advisory/2018-02-26/ Third Party Advisory
https://lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f%40%3Cdev.drill.apache.org%3E
https://lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12ee199f5b0c1442%40%3Cdev.drill.apache.org%3E
https://lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d2869b4d798e13cc%40%3Cissues.drill.apache.org%3E
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