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Fencer Vulns
medium 5.3

CVE-2019-14855 json

A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm.

published 2020-03-20 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-5977

cvss
5.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

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.

Patch / fix

  • gnupg gnupg 2.2.18
  • gnupg2 Debian 14, Debian 13, Debian 12 2.2.19-1

debian advisories DEBIAN-CVE-2019-14855

  • gnupg2 Ubuntu 18.04 LTS 2.2.4-1ubuntu1.3

ubuntu advisories UBUNTU-CVE-2019-14855

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gpg2 openSUSE Tumbleweed 2.2.27-2.4

opensuse advisories openSUSE-SU-2024:10815-1

  • gnupg Alpine 3.10, Alpine 3.9, Alpine 3.8 2.2.19-r0
  • gnupg Alpine 3.24, Alpine 3.23, Alpine 3.22 +11 more 2.2.18-r0

alpine advisories ALPINE-CVE-2019-14855

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-14855 updated cvss 5.3

gnupg2: OpenPGP Key Certification Forgeries with SHA-1

  • Red Hat Enterprise Linux 5 gnupg
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 5 gnupg2 Red Hat Enterprise Linux 6 gnupg2, gnupg2-smime Red Hat Enterprise Linux 7 gnupg2, gnupg2-smime Red Hat Enterprise Linux 8 gnupg2, gnupg2-smime
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-24-284-16 updated cvss 7.5

Rockwell Automation DataMosaix Private Cloud

  • Rockwell Automation DataMosaix Private Cloud <=7.07
    affected: mitigation “Rockwell Automation encourages users to implement security best practices to minimize the risk of the vulnerability.” rockwellautomation.custhelp.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.08% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • rwc.iacr.org https://rwc.iacr.org/2020/slides/Leurent.pdf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 5.3 CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Red Hat gnupg2

Classification

Weakness
  • CWE-326 Inadequate Encryption Strength

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.