CVE-2022-38621: Doufox v0.0.4 was discovered to contain a remote code execution (RCE) vulnerability via the edit file page

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2022-38621 is a critical-severity flaw (CVSS 9.8) affecting doufox. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Doufox v0.0.4 was discovered to contain a remote code execution (RCE) vulnerability via the edit file page. This vulnerability allows attackers to execute arbitrary code via a crafted PHP file.

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	25.0% (top 2%)
CISA exploited list	No
Published	2022-09-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: doufox

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

Am I affected?

Timeline

2022-09-16 19:15 UTCPublished CVE record published
2026-06-17 04:56 UTCUpdated Record last modified

doufox doufox DOWNGRADE

Affected: 0.0.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.0.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.0.4 (Debian / Ubuntu)

apt-cache madison doufox sudo apt install doufox=<VERSION_BEFORE_0.0.4> sudo apt-mark hold doufox

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

dnf --showduplicates list doufox sudo dnf downgrade doufox-<VERSION_BEFORE_0.0.4> sudo dnf versionlock add doufox

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 46 · lib3mf · FIXED · 2.2.0-25.fc46 · FEDORA-2026-e250630e59 · source

sudo dnf upgrade --advisory=FEDORA-2026-e250630e59

Fedora ELN · libslirp · FIXED · 4.9.7-1.eln159 · FEDORA-2026-209cb94e13 · source

sudo dnf upgrade --advisory=FEDORA-2026-209cb94e13

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: github.com/Doufox/Doufox/issues/7

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-2022-38621?

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

Is CVE-2022-38621 being exploited?

CVE-2022-38621 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-2022-38621 affect?

CVE-2022-38621 affects doufox. Severity is critical (CVSS 9.8). Doufox v0.0.4 was discovered to contain a remote code execution (RCE) vulnerability via the edit file page. This vulnerability allows attackers to execute arbitrary code via a crafted PHP file.

How urgent is CVE-2022-38621?

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

Software pages

PHP vulnerabilities

References

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