CVE-2020-15047

MSA/SMTP.cpp in Trojita before 0.8 ignores certificate-verification errors, which allows man-in-the-middle attackers to spoof SMTP servers.

Published: 2020-06-25 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-15047 is rated Moderate Risk (42.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.80%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-15047

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.12% 0.80% +0.67%
2 2025-03-30 0.18% 0.12% -0.05%
3 2025-03-29 — 0.18% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-15047

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2020-15047

OS Trackers for CVE-2020-15047

vendor priority summary link
ubuntu medium CVE-2020-15047 medium priority: Ubuntu including 1 source packages (trojita), 17 status rows across 17 suites (bionic, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 7, ignored 7, needed 2, needs-triage 1. https://ubuntu.com/security/CVE-2020-15047

Affected software / configurations for CVE-2020-15047

Vendor Product Version Raw CPE
trojita_project trojita < 0.8 cpe:2.3:a:trojita_project:trojita:*:*:*:*:*:*:*:*

References for CVE-2020-15047

URL Tags
https://bugs.kde.org/show_bug.cgi?id=423453 Issue Tracking Patch Third Party Advisory
https://gerrit.vesnicky.cesnet.cz/r/1035 Patch Third Party Advisory
cvelogic Threat Intelligence