CVE-2025-8546

Name: CVE-2025-8546
Creator: NVD / NIST
Published: 2025-08-05T05:15:38.52+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2025-8546 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A vulnerability, which was classified as problematic, was found in atjiu pybbs up to 6.0.0. This affects the function adminlogin/login of the component Verification Code Handler. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

Description

A vulnerability, which was classified as problematic, was found in atjiu pybbs up to 6.0.0. This affects the function adminlogin/login of the component Verification Code Handler. The manipulation leads to guessable captcha. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The patch is named ecaf8d46944fd03e3c4ea05698f8acf0aaa570cf. It is recommended to apply a patch to fix this issue.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS 4.0

5.5/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.42%

33.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Pybbs Project	Pybbs	<= 6.0.0

References

https://github.com/atjiu/pybbs/commit/ecaf8d46944fd03e3c4ea05698f8acf0aaa570cfPatch
https://github.com/atjiu/pybbs/issues/199Exploit, Issue Tracking
https://github.com/atjiu/pybbs/issues/199#issue-3256276118Exploit, Issue Tracking
https://github.com/atjiu/pybbs/issues/199#issuecomment-3134573731Issue Tracking
https://vuldb.com/?ctiid.318675Permissions Required, VDB Entry
https://vuldb.com/?id.318675Third Party Advisory, VDB Entry
https://vuldb.com/?submit.622179Third Party Advisory, VDB Entry

Timeline

Published: Aug 5, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-8546?

How severe is CVE-2025-8546?

CVE-2025-8546 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2025-8546?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-8546?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST