6.5

CVE-2014-2653: openbsd openssh Improper Input Validation

CVSS: 6.5v3.1MediumModified
AliasesMGASA-2014-0166DEBIAN-CVE-2014-2653
Published 27-03-2014Last modified 28-05-2026
Open JSON

Vulnerability summary

CVE-2014-2653 is a medium (CVSS 6.5) Improper Input Validation vulnerability in openbsd openssh. EPSS estimates a 1.99% chance of exploitation in the next 30 days, higher than 80.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
1.99%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 3
DSA-2894-1RHSA-2014:1552RHSA-2015:0425

Timeline

  1. 27-03-2014
    PublishedVulnerability first disclosed.
  2. 28-05-2026
    Last modifiedVulnerability information updated.

Description

The verify_host_key function in sshconnect.c in the client in OpenSSH 6.6 and earlier allows remote servers to trigger the skipping of SSHFP DNS RR checking by presenting an unacceptable HostCertificate.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.99%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

0.00 pp

From 1.99% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.99%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.debian.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Mageia2 products
  • openssh< 6.1p1-4.3.mga3
  • openssh< 6.2p2-3.2.mga4
Debian1 product
  • openssh< 1:6.6p1-1
Openbsd1 product
  • openssh≤ 6.6 | 6.0 | 6.1 | 6.2 | 6.3 | 6.4 | 6.5

3 vendors · 4 products

References

20 links
Show all 20 references