CVE-2008-5279 — The Local ZIM Server (zcs.exe) in Zilab Chat and Instant Messaging (ZIM) Server 2.1 and earlier allow remote attackers to execute arbitrary code via (1) heap-based buffer overflows involving multiple vectors including a long room name and a long source account, and (2) a stack-based buffer overflow with a long username in an information request

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HIGH

The Local ZIM Server (zcs.exe) in Zilab Chat and Instant Messaging (ZIM) Server 2.1 and earlier allow remote attackers to execute arbitrary code via (1) heap-based buffer overflows involving multiple vectors including a long room name and a long source account, and (2) a stack-based buffer overflow with a long username in an information request

Published Nov 29, 2008

10.0

HIGH

CVSS 2.0

EPSS 5.66%

Description

The Local ZIM Server (zcs.exe) in Zilab Chat and Instant Messaging (ZIM) Server 2.1 and earlier allow remote attackers to execute arbitrary code via (1) heap-based buffer overflows involving multiple vectors including a long room name and a long source account, and (2) a stack-based buffer overflow with a long username in an information request. NOTE: some of these details are obtained from third party information.

Affected products

Remediation

No remediation recorded yet.

Metrics

5.66% 0.05664

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

EPSS probability 0.05664

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 (12 key points)

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

Date	Score	Percentile	Model
Oct 1, 2026	5.66% (0.05664)	92.74th	v5 (v2026.06.15)
Jun 15, 2026	5.66% (0.05664)	91.95th	v5 (v2026.06.15)
Mar 30, 2025	6.60% (0.06605)	90.26th	v4 (v2025.03.14)
Mar 29, 2025	4.81% (0.04807)	82.10th	v4 (v2025.03.14)
Mar 17, 2025	6.60% (0.06605)	90.49th	v4 (v2025.03.14)
Dec 17, 2024	8.66% (0.08658)	94.49th	v3 (v2023.03.01)
Jun 9, 2024	3.43% (0.03431)	91.48th	v3 (v2023.03.01)
May 29, 2023	4.05% (0.04046)	90.81th	v3 (v2023.03.01)
Mar 7, 2023	4.47% (0.04475)	91.15th	v3 (v2023.03.01)
Mar 6, 2023	6.52% (0.06523)	91.37th	v2 (v2022.01.01)
Apr 1, 2022	6.52% (0.06523)	90.53th	v2 (v2022.01.01)
Feb 4, 2022	6.52% (0.06523)	78.43th	v2 (v2022.01.01)

Weaknesses (1)

CWE-119

Buffer Overflow

References (5)

http://aluigi.altervista.org/adv/zilabzcsx-adv.txt
x_refsource_MISC
http://aluigi.org/poc/zilabzcsx.zip
x_refsource_MISCExploit
http://secunia.com/advisories/29062
third-party-advisoryx_refsource_SECUNIAVendor Advisory
http://www.securityfocus.com/bid/27940
vdb-entryx_refsource_BIDExploit
http://www.vupen.com/english/advisories/2008/0664
vdb-entryx_refsource_VUPEN

Link	Providers	Tags
http://aluigi.altervista.org/adv/zilabzcsx-adv.txt		x_refsource_MISC
http://aluigi.org/poc/zilabzcsx.zip		x_refsource_MISCExploit
http://secunia.com/advisories/29062		third-party-advisoryx_refsource_SECUNIAVendor Advisory
http://www.securityfocus.com/bid/27940		vdb-entryx_refsource_BIDExploit
http://www.vupen.com/english/advisories/2008/0664		vdb-entryx_refsource_VUPEN

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Nov 29, 2008

Updated Aug 7, 2024

Reserved Nov 28, 2008

Link CVE-2008-5279

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2008-5279

Red Hat

Severity n/a

Public date n/a

Links CVE-2008-5279