CVE-2001-1548

Exp

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.

Published: 2001-12-31 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2001-1548 is rated Exploit Available (50/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.43%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2001-1548

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2001-1548

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.07% 0.43% +0.36%
2 2024-12-17 0.04% 0.07% +0.03%
3 2023-03-07 — 0.04% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-1548

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2001-1548

Affected software / configurations for CVE-2001-1548

Vendor Product Version Raw CPE
zonelabs zonealarm 2.1 cpe:2.3:a:zonelabs:zonealarm:2.1:*:*:*:*:*:*:*
zonelabs zonealarm 2.2 cpe:2.3:a:zonelabs:zonealarm:2.2:*:*:*:*:*:*:*
zonelabs zonealarm 2.3 cpe:2.3:a:zonelabs:zonealarm:2.3:*:*:*:*:*:*:*
zonelabs zonealarm 2.4 cpe:2.3:a:zonelabs:zonealarm:2.4:*:*:*:*:*:*:*
zonelabs zonealarm 2.4 cpe:2.3:a:zonelabs:zonealarm:2.4:*:pro:*:*:*:*:*
zonelabs zonealarm 2.5 cpe:2.3:a:zonelabs:zonealarm:2.5:*:*:*:*:*:*:*
zonelabs zonealarm 2.6 cpe:2.3:a:zonelabs:zonealarm:2.6:*:*:*:*:*:*:*
zonelabs zonealarm 2.6 cpe:2.3:a:zonelabs:zonealarm:2.6:*:pro:*:*:*:*:*

References for CVE-2001-1548

cvelogic Threat Intelligence