CVE-2022-28927: A remote code execution (RCE) vulnerability in Subconverter v0.7.2 allows attackers to execute arbitrary code

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2022-28927 is a critical-severity flaw (CVSS 9.8) affecting subconverter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A remote code execution (RCE) vulnerability in Subconverter v0.7.2 allows attackers to execute arbitrary code via crafted config and url parameters.

Why this priority

Critical severity
EPSS top 2%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	34.4% (top 2%)
CISA exploited list	No
Weakness	CWE-434
Published	2022-05-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: subconverter project

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

Am I affected?

Timeline

2022-05-19 16:15 UTCPublished CVE record published
2026-06-17 04:39 UTCUpdated Record last modified

subconverter project subconverter DOWNGRADE

Affected: 0.7.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.7.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.7.2 (Debian / Ubuntu)

apt-cache madison subconverter sudo apt install subconverter=<VERSION_BEFORE_0.7.2> sudo apt-mark hold subconverter

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

dnf --showduplicates list subconverter sudo dnf downgrade subconverter-<VERSION_BEFORE_0.7.2> sudo dnf versionlock add subconverter

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.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora ELN · luksmeta · FIXED · 11-3.eln159 · FEDORA-2026-5176083b78 · source

sudo dnf upgrade --advisory=FEDORA-2026-5176083b78

Fedora 46 · openscad · FIXED · 2021.01-34.fc46 · FEDORA-2026-faf1721128 · source

sudo dnf upgrade --advisory=FEDORA-2026-faf1721128

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: gist.github.com/CwithW/01a726e5af709655d6ee0b2067cdae03

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-2022-28927?

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

Is CVE-2022-28927 being exploited?

CVE-2022-28927 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-2022-28927 affect?

CVE-2022-28927 affects subconverter. Severity is critical (CVSS 9.8). A remote code execution (RCE) vulnerability in Subconverter v0.7.2 allows attackers to execute arbitrary code via crafted config and url parameters.

How urgent is CVE-2022-28927?

Priority 69/100. Critical severity; EPSS top 2%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-35579 HIGH 7.5 DOWNGRADE tindy2013 subconverter 0.6.4 has a /sub?target=%TARGET%&url=%URL%&config=%CONFIG% API endpoint that accepts an

References

← Back to latest CVEs