CVE-2017-9149: Metadata Anonymisation Toolkit (MAT) 0.6 and 0.6.1 silently fails to perform "Clean metadata" actions upon inv

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HIGH 7.5REMOTEDOWNGRADE

CVE-2017-9149 is a high-severity flaw (CVSS 7.5) affecting metadata anonymisation toolkit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Metadata Anonymisation Toolkit (MAT) 0.6 and 0.6.1 silently fails to perform "Clean metadata" actions upon invocation from the Nautilus contextual menu, which allows context-dependent attackers to obtain sensitive information by reading a file for which cleaning had been attempted.

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Weakness	CWE-200
Published	2017-05-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: metadata anonymisation toolkit project

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

Am I affected?

Timeline

2017-05-22 19:29 UTCPublished CVE record published
2026-06-17 01:27 UTCUpdated Record last modified

metadata anonymisation toolkit project metadata anonymisation toolkit DOWNGRADE

Affected: 0.6 · 0.6.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.6

1. Check installed version

apt-cache policy metadata-anonymisation-toolkit || rpm -q metadata-anonymisation-toolkit || metadata-anonymisation-toolkit --version

2. No fixed release: DOWNGRADE to a release before 0.6 (Debian / Ubuntu)

apt-cache madison metadata-anonymisation-toolkit sudo apt install metadata-anonymisation-toolkit=<VERSION_BEFORE_0.6> sudo apt-mark hold metadata-anonymisation-toolkit

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

dnf --showduplicates list metadata-anonymisation-toolkit sudo dnf downgrade metadata-anonymisation-toolkit-<VERSION_BEFORE_0.6> sudo dnf versionlock add metadata-anonymisation-toolkit

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-2017-9149?

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

Is CVE-2017-9149 being exploited?

CVE-2017-9149 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-2017-9149 affect?

CVE-2017-9149 affects metadata anonymisation toolkit. Severity is high (CVSS 7.5). Metadata Anonymisation Toolkit (MAT) 0.6 and 0.6.1 silently fails to perform "Clean metadata" actions upon invocation from the Nautilus contextual menu, which allows context-dependent attackers to obtain sensitive information by reading a f

How urgent is CVE-2017-9149?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

References

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