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CVE-2001-1548

14
FAUCET Score

CVE-2001-1548 describes a vulnerability in ZoneAlarm versions 2.1 through 2.6 and ZoneAlarm Pro 2.4 and 2.6, where local users can bypass filtering mechanisms. This bypass is achieved by crafting non-standard TCP packets using non-Windows protocol adapters. The vulnerability has a low CVSS score of 2.1 (AV:L/AC:L/Au:N/C:N/I:P/A:N), indicating local access, low attack complexity, no authentication required, and a potential impact of partial integrity compromise. There is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB, though it has garnered significant community discussion with 10 mentions.

Impacted Technologies

VendorProductVersion(s)CPE
2.1CPE matchmatch criteria
cpe:2.3:a:zonelabs:zonealarm:2.1:*:*:*:*:*:*:*
2.2CPE matchmatch criteria
cpe:2.3:a:zonelabs:zonealarm:2.2:*:*:*:*:*:*:*
2.3CPE matchmatch criteria
cpe:2.3:a:zonelabs:zonealarm:2.3:*:*:*:*:*:*:*
2.4CPE matchmatch criteria
cpe:2.3:a:zonelabs:zonealarm:2.4:*:*:*:*:*:*:*
2.4CPE matchmatch criteria
cpe:2.3:a:zonelabs:zonealarm:2.4:*:pro:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.1LOW

AV:L/AC:L/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 64th percentile among its peer group of 2,096 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

archives.neohapsis.com / archives/bugtraq/2001-12/0056.html
ExploitVendor Advisory
archives.neohapsis.com / archives/bugtraq/2001-12/0065.html
iss.net / security_center/static/7671.php
securityfocus.com / bid/3647
Exploit