CVE-2002-0163

Heap-based buffer overflow in Squid before 2.4 STABLE4, and Squid 2.5 and 2.6 until March 12,...

7.5 HighPublic exploit

Heap-based buffer overflow in Squid before 2.4 STABLE4, and Squid 2.5 and 2.6 until March 12, 2002 distributions, allows remote attackers to cause a denial of service, and possibly execute arbitrary code, via compressed DNS responses.

Exploit likelihood

15.1%Down 20.2 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2002-0163
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2002-0163
Updated: 2026-11-02

EUVDEUVD-2002-0162 No score

Record: EUVD-2002-0162
Updated: 2026-11-03

GitHub AdvisoriesGHSA-wq2p-p836-86h4 No score

Heap-based buffer overflow in Squid before 2.4 STABLE4, and Squid 2.5 and 2.6 until March 12,...

Record: GHSA-wq2p-p836-86h4
Updated: 2026-11-02

Affected products

squid

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Squid 2.4.1 - Remote Buffer Overflow	2002-05-14

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2002-0163 is a high vulnerability (CVSS 7.5) in Squid, published March 26, 2002. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 15.1%, the 96th percentile. No source names a fixed version.