CVE-2013-4366

highpriority · track · 40EPSS 0.033 · 88 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

3.31% (88th) EPSS

CVSS 7.5 · high

Is it mine?

10 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

http/impl/client/HttpClientBuilder.java in Apache HttpClient 4.3.x before 4.3.1 does not ensure that X509HostnameVerifier is not null, which allows attackers to have unspecified impact via vectors involving hostname verification.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-20USCWE-20US

affected products (10)

Products and version ranges known to be affected.

Dell Data Protection Advisor <19.12 SP2all versionscert_bundDE
Dell Data Protection Advisor< 19.12 SP2cert_bundDE
n/a n/a≤ n/aenisa_euvdEU
Apache Software Foundation HttpClient≤ 4.3 finalfstec_bduRU
Apache Software Foundation HttpClient≤ 4.3 beta2fstec_bduRU
Apache Software Foundation HttpClient≤ 4.3 beta1fstec_bduRU
Apache Software Foundation HttpClient≤ 4.3 alpha1fstec_bduRU
Apache Software Foundation HttpClient≤ 4.3fstec_bduRU
apache httpclient= 4.3nvdUScpe:2.3:a:apache:httpclient:*:*:*:*:*:*:*:*
Maven org.apache.httpcomponents:httpclient4.3 → 4.3.1osvUSpkg:maven/org.apache.httpcomponents/httpclient

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0180Dell Data Protection Advisor: Mehrere SchwachstellenDeutsch2026-01-20csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Dell Data Protection Advisor ausnutzen, um beliebigen Code auszuführen, einen Denial-of-Service-Zustand zu erzeugen, Sicherheitsmaßnahmen zu umgehen und nicht näher spezifizierte Angriffe zu starten.
GHSA-pqwh-44jj-p5rmHostname verification in Apache HttpClient 4.3 was disabled by default2022-05-13ghsa · osvUS
http/impl/client/HttpClientBuilder.java in Apache HttpClient 4.3.x before 4.3.1 does not ensure that X509HostnameVerifier is not null, which allows attackers to have unspecified impact via vectors involving hostname verification.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd osv NVD CVE.org MITRE

published 2017-10-30modified 2026-06-16

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references (9)

External citations — patches, advisories, analysis.

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