2.1

CVE-2010-4021: mit kerberos_5 Configuration

Modified
AliasesDEBIAN-CVE-2010-4021
Published 02-12-2010Last modified 07-08-2024

Vulnerability summary

CVE-2010-4021 is a low (CVSS 2.1) Configuration vulnerability in mit kerberos_5. EPSS estimates a 2.09% chance of exploitation in the next 30 days, higher than 81.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 2.1, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
2.1/10
010
Low · v2.0 (NVD)
EPSS score
2.09%
0%100%
Low · 0.00 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 1 · Related 1
OPENSUSE-SU-2024:10004-1

Timeline

  1. 02-12-2010
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 does not properly restrict the use of TGT credentials for armoring TGS requests, which might allow remote authenticated users to impersonate a client by rewriting an inner request, aka a "KrbFastReq forgery issue."

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.09%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.09% 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, authentication (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • krb5< 1.8+dfsg~alpha1-1
Mit1 product

2 vendors · 2 products

References

18 links
Show all 18 references