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CVE-2000-0971

37
FAUCET Score

CVE-2000-0971 describes a critical denial-of-service vulnerability affecting Avirt Mail versions 4.0 and 4.2. Attackers can trigger this by sending an excessively long "RCPT TO" or "MAIL FROM" command, potentially leading to arbitrary command execution. With a CVSS score of 10.0, this vulnerability is highly severe, requiring no authentication and having a low attack complexity, allowing for complete compromise of confidentiality, integrity, and availability. While not listed on the KEV catalog, an exploit is publicly available on ExploitDB, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:a:avirt:avirt_mail_server:4.0:*:*:*:*:*:*:*
4.2CPE matchmatch criteria
cpe:2.3:a:avirt:avirt_mail_server:4.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
5.58%
Probability of exploitation in next 30 days
EPSS Percentile
92.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
ExploitDB: EDB-20311 · Oct 23, 2000
This CVE's current EPSS score of 0.0558 is in the 86th percentile among its peer group of 51,455 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

archives.neohapsis.com / archives/bugtraq/2000-10/0301.html
ExploitVendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/5397
exchange.xforce.ibmcloud.com / vulnerabilities/5398