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Fencer Vulns
critical 10.0

CVE-2007-4743 json

The original patch for CVE-2007-3999 in svc_auth_gss.c in the RPCSEC_GSS RPC library in MIT Kerberos 5 (krb5) 1.4 through 1.6.2, as used by…

published 2007-09-06 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-4724

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.6%
EPSS 4.6% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

The original patch for CVE-2007-3999 in svc_auth_gss.c in the RPCSEC_GSS RPC library in MIT Kerberos 5 (krb5) 1.4 through 1.6.2, as used by the Kerberos administration daemon (kadmind) and other applications that use krb5, does not correctly check the buffer length in some environments and architectures, which might allow remote attackers to conduct a buffer overflow attack.

Patch / fix

  • krb5 Debian 14, Debian 13, Debian 12 1.6.dfsg.1-7

debian advisories DEBIAN-CVE-2007-4743

  • krb5 RHEL 5 1.5-29
  • krb5-libs RHEL 5 1.5-29
  • krb5-server RHEL 5 1.5-29
  • krb5-workstation RHEL 5 1.5-29

red hat advisories RHSA-2007:0892

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-2007-4743 updated

krb5 incomplete fix for CVE-2007-3999

  • Red Hat Enterprise Linux (v. 5 server) krb5 1.5-29, krb5-libs 1.5-29, krb5-server 1.5-29, krb5-workstation 1.5-29 Red Hat Enterprise Linux Desktop (v. 5 client) krb5 1.5-29, krb5-libs 1.5-29, krb5-server 1.5-29, krb5-workstation 1.5-29 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) krb5 1.5-29, krb5-libs 1.5-29, krb5-server 1.5-29, krb5-workstation 1.5-29
    fixed: vendor fix RHSA-2007:0892

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

Exploit prediction

4.61% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.