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No exploitation reportedFix available

CVE-2019-14855

No exploitation reported by the sources we read.

  • Published2020-03-20
  • WeaknessCWE-326

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.

Timeline

dates in UTC
  1. 2020-03-2016:15CVE publishedNVD

Versions per branch

NVD
Fedoraproject fedora
BranchAffectedFixed in
30.x= 30no fix published
31.x= 31no fix published
Canonical ubuntu linux
BranchAffectedFixed in
18.4= 18.04no fix published
Gnupg
BranchAffectedFixed in
2.2< 2.2.182.2.18

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • gnupgWolfiall versions · fixed in 0
  • gnupgUbuntu:Pro:16.04:LTSall versions · no fixed version listedand 1 other package
  • gnupgUbuntu:Pro:14.04:LTSall versions · no fixed version listed
  • gnupgCleanStartall versions · fixed in 2.2.18-r0
  • gnupgChainguardall versions · fixed in 0
  • gnupgAlpine:v3.24all versions · fixed in 2.2.18-r0
  • gnupgAlpine:v3.23all versions · fixed in 2.2.18-r0
  • gnupgAlpine:v3.22all versions · fixed in 2.2.18-r0

30 more package ranges on OSV.dev

Vendor advisories

  • CVE-2019-14855 Red Hat Product Security1 known affected

    gnupg2: OpenPGP Key Certification Forgeries with SHA-1

    gnupg as a component of Red Hat Enterprise Linux 5

  • ICSA-24-284-16 CISA1 known affected

    Rockwell Automation DataMosaix Private Cloud

    Rockwell Automation DataMosaix Private Cloud: <=7.07

Full record on NVD

Fix

  1. Mitigation from the vendor CISA ICSA-24-284-16 · 1 productRockwell Automation has addressed this issue in version v7.09 and encourages users to update to the newest available version. Rockwell Automation encourages users of the affected software to apply risk mitigations, if possible.
  2. Mitigation from the vendor CISA ICSA-24-284-16 · 1 productRockwell Automation encourages users to implement security best practices to minimize the risk of the vulnerability.
  3. Mitigation from the vendor CISA ICSA-24-284-16 · 1 productFor more information about this issue, please see the advisory on the Rockwell Automation security page.
  4. No fix planned, says the vendor Red Hat Product Security CVE-2019-14855 · 1 productOut of support scope

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.17.5read 2026-10-23
  • CNACVSS 3.05.3known since 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-326known since 2026-10-23
  • NVDweakness (CWE)CWE-326read 2026-10-23
  • FIRST EPSSEPSS score1.1 %2026-11-09
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2020-03-20
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-cpvm-f36g-55vg

Frequently asked questions

What is CVE-2019-14855?

A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.

Is CVE-2019-14855 actively exploited?

Active exploitation of CVE-2019-14855 has not been confirmed. Its EPSS score was 1.1% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-14855?

CVE-2019-14855 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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