CVE-2021-38372: In KDE Trojita 0.7, man-in-the-middle attackers can create new folders because untagged responses from an IMAP

This week

LOW 3.7REMOTEDOWNGRADE

CVE-2021-38372 is a low-severity flaw (CVSS 3.7) affecting trojita. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In KDE Trojita 0.7, man-in-the-middle attackers can create new folders because untagged responses from an IMAP server are accepted before STARTTLS.

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	3.7 (Low)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-77
Published	2021-08-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: kde

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-08-10 15:15 UTCPublished CVE record published
2026-06-17 04:01 UTCUpdated Record last modified

kde trojita DOWNGRADE

Affected: 0.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.7

1. Check installed version

apt-cache policy trojita || rpm -q trojita || trojita --version

2. No fixed release: DOWNGRADE to a release before 0.7 (Debian / Ubuntu)

apt-cache madison trojita sudo apt install trojita=<VERSION_BEFORE_0.7> sudo apt-mark hold trojita

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list trojita sudo dnf downgrade trojita-<VERSION_BEFORE_0.7> sudo dnf versionlock add trojita

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-38372?

trojita: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-38372 being exploited?

CVE-2021-38372 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-38372 affect?

CVE-2021-38372 affects trojita. Severity is low (CVSS 3.7). In KDE Trojita 0.7, man-in-the-middle attackers can create new folders because untagged responses from an IMAP server are accepted before STARTTLS.

How urgent is CVE-2021-38372?

Priority 37/100. Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-15047 MEDIUM 5.9 UPGRADE MSA/SMTP.cpp in Trojita before 0.8 ignores certificate-verification errors, which allows man-in-the-middle att

References

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