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CVE-2019-8337

15
FAUCET Score

CVE-2019-8337 is a medium-severity vulnerability affecting msmtp 1.8.2 and mpop 1.4.3, where the default tls_trust_file configuration fails to properly check certificate-verification results. This flaw, categorized as CWE-295, could lead to a low-impact integrity compromise without requiring user interaction or elevated privileges, as indicated by its CVSSv3 score of 5.3. There is currently no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit or ExploitDB. The vulnerability has garnered minimal community discussion and media coverage, suggesting a low level of public awareness and exploitation interest.

Impacted Technologies

VendorProductVersion(s)CPE
1.4.2CPE matchmatch criteria
cpe:2.3:a:marlam:mpop:1.4.2:*:*:*:*:*:*:*
1.8.2CPE matchmatch criteria
cpe:2.3:a:marlam:msmtp:1.8.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.92%
Probability of exploitation in next 30 days
EPSS Percentile
56.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0092 is in the 35th 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

gitlab.marlam.de / marlam/mpop/commit/b51a6c6b8b83bf0913cc52fa2ff64307e987a5b8
PatchThird Party Advisory
marlam.de / mpop/news/mpop-1-4-3
PatchThird Party Advisory
marlam.de / msmtp/news
PatchVendor Advisory