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CVE-2004-0156

16
FAUCET Score

CVE-2004-0156 describes format string vulnerabilities in the die and log_event functions of ssmtp versions prior to 2.50.6. These flaws allow remote mail relays to trigger a denial of service and potentially execute arbitrary code on affected systems. With a CVSS score of 5.0, this vulnerability is rated as medium severity, requiring no authentication and having low attack complexity, but primarily impacting availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.49CPE matchmatch criteria
cpe:2.3:a:ssmtp:ssmtp:*:*:*:*:*:*:*:*

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
3.50%
Probability of exploitation in next 30 days
EPSS Percentile
87.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0350 is in the 84th 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

Patch Available

Vendor Patches (2)

debianpatch availablevia nvd_reference
View patch
gentoopatch availablevia nvd_reference
View patch

References

marc.info
secunia.com / advisories/11378
secunia.com / advisories/11384
secunia.com / advisories/11485
secunia.com / advisories/11571
security.gentoo.org / glsa/glsa-200404-18.xml
PatchVendor Advisory
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/15872
debian.org / security/2004/dsa-485
PatchVendor Advisory
osvdb.org / 5360
osvdb.org / 5361
securityfocus.com / bid/10150