CVE-2006-5556 — Buffer overflow in the localtime_r function, and certain other functions, in libc in HP-UX B.11.11 and possibly other versions allows local users to execute arbitrary code via a long TZ environment variable

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MEDIUM

Buffer overflow in the localtime_r function, and certain other functions, in libc in HP-UX B.11.11 and possibly other versions allows local users to execute arbitrary code via a long TZ environment variable

Published Oct 27, 2006

4.6

MEDIUM

CVSS 2.0

EPSS 1.33%

Description

Buffer overflow in the localtime_r function, and certain other functions, in libc in HP-UX B.11.11 and possibly other versions allows local users to execute arbitrary code via a long TZ environment variable.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.33% 0.01326

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01326

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (8 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.33% (0.01326)	69.93th	v5 (v2026.06.15)
Jun 15, 2026	1.24% (0.01243)	65.24th	v5 (v2026.06.15)
Mar 17, 2025	0.21% (0.00205)	40.69th	v4 (v2025.03.14)
Dec 12, 2024	0.04% (0.00042)	0.34th	v3 (v2023.03.01)
Mar 7, 2023	0.04% (0.00042)	0.50th	v3 (v2023.03.01)
Mar 6, 2023	2.26% (0.02258)	81.36th	v2 (v2022.01.01)
Apr 1, 2022	2.26% (0.02258)	79.60th	v2 (v2022.01.01)
Feb 4, 2022	2.26% (0.02258)	58.16th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (4)

http://blogs.23.nu/prdelka/stories/13144/
x_refsource_MISCExploit
http://www.securityfocus.com/bid/20718
vdb-entryx_refsource_BIDExploitPatch
https://exchange.xforce.ibmcloud.com/vulnerabilities/29777
vdb-entryx_refsource_XF
https://www.exploit-db.com/exploits/2636
exploitx_refsource_EXPLOIT-DB

Link	Providers	Tags
http://blogs.23.nu/prdelka/stories/13144/		x_refsource_MISCExploit
http://www.securityfocus.com/bid/20718		vdb-entryx_refsource_BIDExploitPatch
https://exchange.xforce.ibmcloud.com/vulnerabilities/29777		vdb-entryx_refsource_XF
https://www.exploit-db.com/exploits/2636		exploitx_refsource_EXPLOIT-DB

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Oct 27, 2006

Updated Aug 7, 2024

Reserved Oct 27, 2006

Link CVE-2006-5556

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2006-5556

Red Hat

Severity n/a

Public date n/a

Links CVE-2006-5556