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CVE-1999-1532

23
FAUCET Score

CVE-1999-1532 describes a denial-of-service vulnerability affecting Netscape Messaging Server versions 3.54, 3.55, and 3.6. A remote attacker can exploit this by sending a series of excessively long RCPT TO commands, leading to memory exhaustion on the server. This vulnerability is rated Medium severity (CVSS 5.0) due to its network-based attack vector, low attack complexity, and potential for partial availability impact. While not listed in CISA's KEV catalog or the Hot List, an exploit module for this vulnerability is available on ExploitDB, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
3.6CPE matchmatch criteria
cpe:2.3:a:netscape:messaging_server:3.6:*:*:*:*:*:*:*
3.54CPE matchmatch criteria
cpe:2.3:a:netscape:messaging_server:3.54:*:*:*:*:*:*:*
3.55CPE matchmatch criteria
cpe:2.3:a:netscape:messaging_server:3.55:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

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

Exploit Intelligence

EPSS Score
2.46%
Probability of exploitation in next 30 days
EPSS Percentile
82.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
ExploitDB: EDB-19571 · Oct 28, 1999
This CVE's current EPSS score of 0.0246 is in the 74th 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

marc.info
securityfocus.com / bid/748
ExploitVendor Advisory