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CVE-2025-8549: A vulnerability was found in atjiu pybbs up to 6.0.0

33
This week
LOW 3.7REMOTEUPGRADE

CVE-2025-8549 is a low-severity flaw (CVSS 3.7) affecting pybbs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in atjiu pybbs up to 6.0.0. It has been classified as critical. Affected is the function update of the file src/main/java/co/yiiu/pybbs/controller/admin/UserAdminController.java. The manipulation leads to weak password requirements. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be u

Why this priority

  • Public exploit reference
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score3.7 (Low)
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges neededNone
User interactionNone
EPSS exploit chance0.5% (top 59%)
CISA exploited listNo
WeaknessCWE-521
Published2025-08-05
Last modified2026-06-17
Publisher (CNA): VulDB · Vendor: pybbs project

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

Am I affected?

Timeline

pybbs project pybbs UPGRADE
Affected: <= 6.0.0
Fixed in: newer than 6.0.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy pybbs || rpm -q pybbs || pybbs --version
2. UPGRADE to newer than 6.0.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade pybbs
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade pybbs
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
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-2025-8549?

pybbs: upgrade to newer than 6.0.0. Exact commands for each OS are on this page.

Is CVE-2025-8549 being exploited?

CVE-2025-8549 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-2025-8549 affect?

CVE-2025-8549 affects pybbs. Severity is low (CVSS 3.7). A vulnerability was found in atjiu pybbs up to 6.0.0. It has been classified as critical. Affected is the function update of the file src/main/java/co/yiiu/pybbs/controller/admin/UserAdminController.java. The manipulation leads to weak pass

How urgent is CVE-2025-8549?

Priority 33/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

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