CVE-2025-7209

Description

A vulnerability has been found in 9fans plan9port up to 9da5b44 and classified as problematic. Affected by this vulnerability is the function value_decode in the library src/libsec/port/x509.c. The manipulation leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The identifier of the patch is deae8939583d83fd798fca97665e0e94656c3ee8. It is recommended to apply a patch to fix this issue.

CVSS v3.1 Score

3.3

LOW

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

Weakness Type (CWE)

CWE-404 CWE-404

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
9fans	plan9port	< 2025-03-29

References

Advisories & Patches

https://git.9front.org/plan9front/plan9front/deae8939583d83fd798fca97665e0e94656c3ee8/commit.html https://github.com/9fans/plan9port/issues/711 https://github.com/9fans/plan9port/issues/711#issuecomment-2819905220

Exploits

https://github.com/9fans/plan9port/issues/711 https://github.com/user-attachments/files/19698361/plan9port_crash_2.txt

Other References

https://vuldb.com/?ctiid.315157 https://vuldb.com/?id.315157 https://vuldb.com/?submit.607685

Frequently Asked Questions

What is CVE-2025-7209? +

A vulnerability has been found in 9fans plan9port up to 9da5b44 and classified as problematic. Affected by this vulnerability is the function value_decode in the library src/libsec/port/x509.c. The manipulation leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The identifier of the patch is deae8939583d83fd798fca97665e0e94656c3ee8. It is recommended to apply a patch to fix this issue. It has a CVSS v3.1 base score of 3.3 (LOW).

How severe is CVE-2025-7209? +

CVE-2025-7209 has a CVSS v3.1 score of 3.3 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-7209? +

CVE-2025-7209 affects products from 9fans, specifically: plan9port. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-7209? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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