CVE-2011-1473

mediumpriority · attend · 53EPSS 0.669 · 99 %ileexploit · PoCDEEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

3 exploits · PoC

Likely / severe?

66.9% (99th) EPSS

CVSS 5 · medium

Is it mine?

15 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

OpenSSL before 0.9.8l, and 0.9.8m through 1.x, does not properly restrict client-initiated renegotiation within the SSL and TLS protocols, which might make it easier for remote attackers to cause a denial of service (CPU consumption) by performing many renegotiations within a single connection, a different vulnerability than CVE-2011-5094. NOTE: it can also be argued that it is the responsibility of server deployments, not a security library, to prevent or limit renegotiation when it is inappropriate within a specific environment

cvss

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

5.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:P/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-264USprimary

exploits (3)

Public proof-of-concept and weaponised exploit code.

XDLDCG/bash-tls-reneg-attackA bash script that attempts to flood a server with TLS renegotiations by using the openssl client. See CVE-2011-1473 and CVE-2011-1473 for details.PoC · poc_in_github
khaledibnalwalid/CVE-2011-1473-POCCVE-2011-1473 POC scriptPoC · poc_in_github
zjt674449039/cve-2011-1473zjt674449039/cve-2011-1473PoC · poc_in_github

affected products (15)

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
openssl openssl≤ 0.9.8knvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl= 0.9.8mnvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl= 0.9.8nnvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl= 0.9.8onvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl= 0.9.8pnvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl= 0.9.8rnvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl= 0.9.8snvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl= 0.9.8tnvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl= 0.9.8unvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl= 0.9.8vnvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl= 0.9.8wnvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
openssl openssl= 0.9.8xnvdUScpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*

advisories (4)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1435Hitachi Energy Relion: Mehrere SchwachstellenDeutsch2023-06-12csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Hitachi Energy Relion ausnutzen, um einen Denial of Service Angriff durchzuführen und Informationen offenzulegen.
WID-SEC-W-2024-0796Dell NetWorker: Schwachstelle ermöglicht Denial of ServiceDeutsch2024-04-04csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Dell NetWorker ausnutzen, um einen Denial of Service Angriff durchzuführen.
WID-SEC-W-2024-1591Juniper JUNOS: Mehrere SchwachstellenDeutsch2024-07-10csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Juniper JUNOS ausnutzen, um einen Denial of Service zu verursachen, Informationen offenzulegen, Privilegien zu erweitern und Sicherheitsmechanismen inklusive zu umgehen.
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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2012-06-16modified 2026-06-16

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+8950 more

references (77)

External citations — patches, advisories, analysis.

scry

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