5.8

CVE-2015-2694: mit kerberos_5

Modified
AliasesUBUNTU-CVE-2015-2694DEBIAN-CVE-2015-2694
Published 25-05-2015Last modified 06-08-2024

Vulnerability summary

CVE-2015-2694 is a medium (CVSS 5.8) vulnerability in mit kerberos_5. EPSS estimates a 2.83% chance of exploitation in the next 30 days, higher than 86.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.8, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.8/10
010
Medium · v2.0 (NVD)
EPSS score
2.83%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 3
OPENSUSE-SU-2024:10004-1RHSA-2015:2154SUSE-SU-2015:1276-1USN-2810-1

Timeline

  1. 25-05-2015
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The kdcpreauth modules in MIT Kerberos 5 (aka krb5) 1.12.x and 1.13.x before 1.13.2 do not properly track whether a client's request has been validated, which allows remote attackers to bypass an intended preauthentication requirement by providing (1) zero bytes of data or (2) an arbitrary realm name, related to plugins/preauth/otp/main.c and plugins/preauth/pkinit/pkinit_srv.c.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.83%

Chance of exploitation in the next 30 days

Percentile

87%

Versus all other CVEs

30-day change

Increase +0.03 pp

From 2.81% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • krb5< 1.12.1+dfsg-20
Mit1 product
  • kerberos_51.12 | 1.12.1 | 1.12.2 | 1.12.3 | 1.13 | 1.13.1
Ubuntu1 product
  • krb5< 1.12+dfsg-2ubuntu5.2

3 vendors · 3 products

References

9 links