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CVE-2011-4862

Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT Kerberos Version 5 Applications (aka krb5-appl) 1.0.2…

High10.0Public exploitEPSS 95.1%
Published
Updated
Reserved
Assigned by
freebsd

Description

Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT Kerberos Version 5 Applications (aka krb5-appl) 1.0.2 and earlier, Heimdal 1.5.1 and earlier, GNU inetutils, and possibly other products allows remote attackers to execute arbitrary code via a long encryption key, as exploited in the wild in December 2011.

Public exploit

A reference of the record is tagged as an exploit or proof of concept: anyone can try it against an unpatched system.

Timeline

  1. ID reserved

    By freebsd

  2. · 6 days later

    Published

  3. · 13 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2011-4862, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified2.0High10.0AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS (exploitation in 30 days)
95.1% · top 0.1% of all CVEs (8 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 10.0.

Weakness

Affected products

  • n/a

    • affected n/a

References (42)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .