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CVE-2006-0559

27
FAUCET Score

CVE-2006-0559 describes a critical format string vulnerability in McAfee WebShield 4.5 MR2 and earlier, specifically within its SMTP server. This flaw allows remote, unauthenticated attackers to execute arbitrary code by injecting malicious format strings into the domain name of a destination address, which is then mishandled during bounce message generation. With a CVSS score of 10.0, this vulnerability presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no public exploit code available (Metasploit, Nuclei, ExploitDB), it is not listed in CISA's KEV catalog, and there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.5CPE matchmatch criteria
cpe:2.3:a:mcafee:webshield_smtp:*:mr2_patch:*:*:*:*:*:*

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
6.08%
Probability of exploitation in next 30 days
EPSS Percentile
92.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0607 is in the 87th percentile among its peer group of 51,551 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

secunia.com / advisories/19491
PatchVendor Advisory
securityreason.com / securityalert/671
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/25621
osvdb.org / 24366
securityfocus.com / archive/1/429812/100/0/threaded
securityfocus.com / bid/16742
Patch
vupen.com / english/advisories/2006/1219