CVE-2001-1548

NONECVSS 0.0

0.0

ZoneAlarm 2.1 through 2.6 and ZoneAlarm Pro 2.4 and 2.6 allows local users to bypass filtering via non-standard TCP packets created with non-Windows protocol adapters.

CVSS v3: —
EG Score: —
EPSS: 17.3%
KEV: Not listed

Published

December 31, 2001

Last Modified

April 16, 2026

References (8)

cve@mitrehttp://archives.neohapsis.com/archives/bugtraq/2001-12/0056.html
cve@mitrehttp://archives.neohapsis.com/archives/bugtraq/2001-12/0065.html
cve@mitrehttp://www.iss.net/security_center/static/7671.php
cve@mitrehttp://www.securityfocus.com/bid/3647
af854a3a-2127-422b-91ae-364da2661108http://archives.neohapsis.com/archives/bugtraq/2001-12/0056.html
af854a3a-2127-422b-91ae-364da2661108http://archives.neohapsis.com/archives/bugtraq/2001-12/0065.html
af854a3a-2127-422b-91ae-364da2661108http://www.iss.net/security_center/static/7671.php
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/3647

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
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Frequently asked(4)

What is CVE-2001-1548?

CVE-2001-1548 is a none vulnerability published on December 31, 2001. ZoneAlarm 2.1 through 2.6 and ZoneAlarm Pro 2.4 and 2.6 allows local users to bypass filtering via non-standard TCP packets created with non-Windows protocol adapters.

When was CVE-2001-1548 disclosed?

CVE-2001-1548 was first published in the National Vulnerability Database on December 31, 2001, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2001-1548 actively exploited?

CVE-2001-1548 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 17.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2001-1548?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2001-1548, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2001-1548

📅 Published

🔄 Last Modified

🔗 References (8)