CVE-2014-3511

mediumpriority · track · 22OT risk · elevatedEPSS 0.141 · 97 %ileDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

14.1% (97th) EPSS

CVSS 4.3 · medium

Is it mine?

97 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

The ssl23_get_client_hello function in s23_srvr.c in OpenSSL 1.0.1 before 1.0.1i allows man-in-the-middle attackers to force the use of TLS 1.0 by triggering ClientHello message fragmentation in communication between a client and server that both support later TLS versions, related to a "protocol downgrade" issue.

cvss

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

4.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.7–4.3

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nsecondary · FSTEC (BDU) RU

v2.03.7lowAV:N/AC:M/Au:N/C:N/I:P/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-326USLLM-inferredCWE-327USLLM-inferred

affected products (97)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
F5 ARX 6.0.0 - 6.4.0all versionscert_bundDEcpe:/a:f5:arx:6.4.0
F5 BIG-IP Access Policy Manager 10.1.0 - 10.2.4all versionscert_bundDEcpe:/a:f5:big-ip_access_policy_manager:10.2.4
F5 BIG-IP Access Policy Manager 11.0.0 - 11.3.0all versionscert_bundDEcpe:/a:f5:big-ip_access_policy_manager:11.3.0
F5 BIG-IP Access Policy Manager 11.5.0 - 11.6.0all versionscert_bundDEcpe:/a:f5:big-ip_access_policy_manager:11.6.0
F5 BIG-IP Analytics 11.0.0 - 11.3.0all versionscert_bundDEcpe:/a:f5:big-ip_analytics:11.3.0
F5 BIG-IP Application Security Manager 10.0.0 - 10.2.4all versionscert_bundDEcpe:/a:f5:big-ip_application_security_manager:10.2.4
F5 BIG-IP Application Security Manager 11.0.0 - 11.3.0all versionscert_bundDEcpe:/a:f5:big-ip_application_security_manager:11.3.0
F5 BIG-IP Application Security Manager 11.5.0 - 11.6.0all versionscert_bundDEcpe:/a:f5:big-ip_application_security_manager:11.6.0
F5 BIG-IP Edge Gateway 10.1.0 - 10.2.4all versionscert_bundDEcpe:/a:f5:big-ip_edge_gateway:10.2.4
F5 BIG-IP Edge Gateway 11.0.0 - 11.3.0all versionscert_bundDEcpe:/a:f5:big-ip_edge_gateway:11.3.0
F5 BIG-IP Global Traffic Manager 11.5.0 - 11.6.0all versionscert_bundDEcpe:/a:f5:big-ip_global_traffic_manager:11.6.0
F5 BIG-IP Link Controller 11.5.0 - 11.6.0all versionscert_bundDEcpe:/a:f5:big-ip_link_controller:11.6.0
F5 BIG-IP Local Traffic Manager 10.0.0 - 10.2.4all versionscert_bundDEcpe:/a:f5:big-ip_local_traffic_manager:10.2.4
F5 BIG-IP Local Traffic Manager 11.0.0 - 11.3.0all versionscert_bundDEcpe:/a:f5:big-ip_local_traffic_manager:11.3.0
F5 BIG-IP Local Traffic Manager 11.5.0 - 11.6.0all versionscert_bundDEcpe:/a:f5:big-ip_local_traffic_manager:11.6.0
F5 BIG-IP Protocol Security Manager 10.0.0 - 10.2.4all versionscert_bundDEcpe:/a:f5:protocol_security_manager:10.2.4
F5 BIG-IP Protocol Security Manager 11.0.0 - 11.3.0all versionscert_bundDEcpe:/a:f5:protocol_security_manager:11.3.0
F5 WebAccelerator 10.0.0 - 10.2.4all versionscert_bundDEcpe:/h:f5:big-ip_webaccelerator:10.2.4
F5 WebAccelerator 11.0.0 - 11.3.0all versionscert_bundDEcpe:/h:f5:big-ip_webaccelerator:11.3.0

showing 20 of 97

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0498OpenSSL: Mehrere SchwachstellenDeutsch2014-08-06csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in OpenSSL ausnutzen, um einen Denial of Service Angriff durchzuführen, Informationen offenzulegen und eine Protokoll Downgrade Attacke durchzuführen.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2014-08-13modified 2026-06-17

references (124)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan