CVE-2025-0473: Vulnerability in the PMB platform that allows an attacker to persist temporary files on the server, affecting

Routine

MEDIUM 6.5DOWNGRADE

CVE-2025-0473 is a medium-severity flaw (CVSS 6.5) affecting pmb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in the PMB platform that allows an attacker to persist temporary files on the server, affecting versions 4.0.10 and above. This vulnerability exists in the file upload functionality on the ‘/pmb/authorities/import/iimport_authorities’ endpoint. When a file is uploaded via this resource, the server will create a temporary file that will be deleted after the client sends a POST request to ‘/pmb/authorities/import/iimport_authorities’.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-459
Published	2025-01-16
Last modified	2026-06-17

Publisher (CNA): Spanish National Cybersecurity Institute, S.A. (INCIBE) · Vendor: sigb

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

Am I affected?

Timeline

2025-01-16 13:15 UTCPublished CVE record published
2026-06-17 08:26 UTCUpdated Record last modified

sigb pmb DOWNGRADE

Affected: >= 4.0.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0.10

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.0.10 (Debian / Ubuntu)

apt-cache madison pmb sudo apt install pmb=<VERSION_BEFORE_4.0.10> sudo apt-mark hold pmb

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

dnf --showduplicates list pmb sudo dnf downgrade pmb-<VERSION_BEFORE_4.0.10> sudo dnf versionlock add pmb

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-2025-0473?

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

Is CVE-2025-0473 being exploited?

CVE-2025-0473 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-2025-0473 affect?

CVE-2025-0473 affects pmb. Severity is medium (CVSS 6.5). Vulnerability in the PMB platform that allows an attacker to persist temporary files on the server, affecting versions 4.0.10 and above. This vulnerability exists in the file upload functionality on the ‘/pmb/authorities/import/iimport_auth

How urgent is CVE-2025-0473?

Priority 33/100. No elevated risk signals yet.

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References

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