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CVE-2006-4364

52
FAUCET Score

CVE-2006-4364 describes multiple heap-based buffer overflows in the POP3 server component of Alt-N Technologies MDaemon versions prior to 9.0.6. This vulnerability allows unauthenticated remote attackers to trigger a denial of service (daemon crash) and potentially execute arbitrary code by sending overly long strings containing '@' characters within the USER or APOP commands. The CVSS score of 5.0 indicates a medium severity, with a low attack complexity and no authentication required, leading to a potential impact of partial availability. While not listed on the KEV catalog or Hot List, proof-of-concept exploit code is publicly available on ExploitDB, though there is no evidence of active exploitation, Metasploit modules, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.8CPE matchmatch criteria
cpe:2.3:a:alt-n:mdaemon:2.8:*:*:*:*:*:*:*
2.8.5.0CPE matchmatch criteria
cpe:2.3:a:alt-n:mdaemon:2.8.5.0:*:*:*:*:*:*:*
2.71_sp1CPE matchmatch criteria
cpe:2.3:a:alt-n:mdaemon:2.71_sp1:*:*:*:*:*:*:*
3.0.3CPE matchmatch criteria
cpe:2.3:a:alt-n:mdaemon:3.0.3:*:*:*:*:*:*:*
3.0.4CPE matchmatch criteria
cpe:2.3:a:alt-n:mdaemon:3.0.4:*:*:*:*:*:*:*

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
56.65%
Probability of exploitation in next 30 days
EPSS Percentile
99.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
ExploitDB: EDB-2258 · Aug 26, 2006
This CVE's current EPSS score of 0.5665 is in the 99th 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

files.altn.com / MDaemon/Release/RelNotes_en.txt
secunia.com / advisories/21595
PatchVendor Advisory
securityreason.com / securityalert/1446
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/28517
exploit-db.com / exploits/2245
infigo.hr / en/in_focus/advisories/INFIGO-2006-08-04
Exploit
osvdb.org / 28125
securityfocus.com / archive/1/444015/100/0/threaded
securityfocus.com / bid/19651
Exploit
vupen.com / english/advisories/2006/3361