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CVE-2001-0631

15
FAUCET Score

CVE-2001-0631 describes a vulnerability in Centrinity First Class Internet Services 5.50 that allows attackers to bypass spam filters by including '<@>' in the 'From:' field, enabling spoofed emails from local users. This medium-severity vulnerability (CVSS 5.0) is easily exploitable over the network with no authentication, leading to integrity impact through email spoofing. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
5.50CPE matchmatch criteria
cpe:2.3:a:opentext:firstclass:5.50:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
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
1.46%
Probability of exploitation in next 30 days
EPSS Percentile
70.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0146 is in the 53rd percentile among its peer group of 23,701 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

archives.neohapsis.com / archives/bugtraq/2001-02/0376.html
ExploitVendor Advisory
archives.neohapsis.com / archives/bugtraq/2001-02/0440.html
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/6192
Third Party Advisory
securityfocus.com / bid/2423
Broken Link