CVE-2022-33127: The function that calls the diff tool in Diffy 3.4.1 does not properly handle double quotes in a filename when

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2022-33127 is a critical-severity flaw (CVSS 9.8) affecting diffy. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The function that calls the diff tool in Diffy 3.4.1 does not properly handle double quotes in a filename when run in a windows environment. This allows attackers to execute arbitrary commands via a crafted string.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.8% (top 21%)
CISA exploited list	No
Published	2022-06-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: diffy project

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

Am I affected?

Timeline

2022-06-23 17:15 UTCPublished CVE record published
2026-06-17 04:48 UTCUpdated Record last modified

diffy project diffy DOWNGRADE

Affected: 3.4.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.4.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.4.1 (Debian / Ubuntu)

apt-cache madison diffy sudo apt install diffy=<VERSION_BEFORE_3.4.1> sudo apt-mark hold diffy

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

dnf --showduplicates list diffy sudo dnf downgrade diffy-<VERSION_BEFORE_3.4.1> sudo dnf versionlock add diffy

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-2022-33127?

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

Is CVE-2022-33127 being exploited?

CVE-2022-33127 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-2022-33127 affect?

CVE-2022-33127 affects diffy. Severity is critical (CVSS 9.8). The function that calls the diff tool in Diffy 3.4.1 does not properly handle double quotes in a filename when run in a windows environment. This allows attackers to execute arbitrary commands via a crafted string.

How urgent is CVE-2022-33127?

Priority 59/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Windows vulnerabilities

References

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