CVE-2014-2734

mediumpriority · track · 35EPSS 0.053 · 93 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · PoC

Likely / severe?

5.35% (93rd) EPSS

CVSS 5.8 · medium

Is it mine?

5 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

The openssl extension in Ruby 2.x does not properly maintain the state of process memory after a file is reopened, which allows remote attackers to spoof signatures within the context of a Ruby script that attempts signature verification after performing a certain sequence of filesystem operations. NOTE: this issue has been disputed by the Ruby OpenSSL team and third parties, who state that the original demonstration PoC contains errors and redundant or unnecessarily-complex code that does not appear to be related to a demonstration of the issue. As of 20140502, CVE is not aware of any public comment by the original researcher

cvss

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

5.8

010

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

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 4.9

v2.05.2mediumAV:N/AC:M/Au:N/C:P/I:P/A:N/E:POCsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-399USprimary

exploits (2)

Public proof-of-concept and weaponised exploit code.

adrienthebo/cve-2014-2734I think this CVE is full of lies and deceit and very confusing code.PoC · poc_in_github
gdisneyleugers/CVE-2014-2734Ruby OpenSSL CA Private Key SpoofingPoC · poc_in_github

affected products (5)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
ruby-lang ruby= 2.0nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 2.0.0nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 2.1nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 2.1.1nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2014-04-24modified 2026-06-17

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+3721 more

references (23)

External citations — patches, advisories, analysis.

scry

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