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CVE-2001-0815

35
FAUCET Score

CVE-2001-0815 describes a critical buffer overflow vulnerability in PerlIS.dll within ActiveState ActivePerl 5.6.1.629 and earlier versions. This flaw allows unauthenticated remote attackers to execute arbitrary code by sending an HTTP request for an excessively long filename ending in a .pl extension. With a CVSS score of 7.5 (High) and a FAUCET Risk Score of 97/100, this vulnerability presents a significant risk due to its low attack complexity and potential for complete compromise of confidentiality, integrity, and availability. While not listed on CISA's KEV catalog, multiple exploit proofs-of-concept are publicly available on ExploitDB, indicating a clear path for exploitation, though there is no evidence of widespread community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.6.1.629CPE matchmatch criteria
cpe:2.3:a:activestate:activeperl:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
14.42%
Probability of exploitation in next 30 days
EPSS Percentile
96.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-21154 · Nov 15, 2001
This CVE's current EPSS score of 0.1442 is in the 94th percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bugs.activestate.com / show_bug.cgi
ExploitVendor Advisory
marc.info
exchange.xforce.ibmcloud.com / vulnerabilities/7539
osvdb.org / 678
securityfocus.com / bid/3526
ExploitPatchVendor Advisory