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CVE-2000-1027

23
FAUCET Score

CVE-2000-1027 describes an information disclosure vulnerability in Cisco Secure PIX Firewall 5.2(2). Remote attackers can determine the internal IP address of an FTP server protected by the firewall by repeatedly sending PASV requests, which causes the firewall to reveal the real IP in the FTP response. This vulnerability has a CVSS score of 5.0 (Medium), indicating a network-based attack with low complexity, requiring no authentication, and impacting confidentiality. While the direct impact is information disclosure, this could aid further reconnaissance. There is no evidence of active exploitation, nor is it listed in CISA's KEV catalog. However, an exploit module for this vulnerability exists on ExploitDB (EDB-20369), suggesting publicly available proof-of-concept code. Community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
5.2CPE matchmatch criteria
cpe:2.3:o:cisco:pix_firewall_software:5.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.54%
Probability of exploitation in next 30 days
EPSS Percentile
88.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-20369 · Oct 3, 2000
This CVE's current EPSS score of 0.0353 is in the 84th percentile among its peer group of 23,684 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, 0.0 Mastodon, and 0.4 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

marc.info
exchange.xforce.ibmcloud.com / vulnerabilities/5646
osvdb.org / 1623
securityfocus.com / bid/1877
ExploitVendor Advisory