CVE-2025-7209
9fans plan9port x509.c value_decode null pointer dereference
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.
INFO
Published Date :
July 9, 2025, 1:15 a.m.
Last Modified :
Feb. 2, 2026, 3:32 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Apply the patch deae8939583d83fd798fca97665e0e94656c3ee8.
- Update the software to include the patch.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-7209.
| URL | Resource |
|---|---|
| https://git.9front.org/plan9front/plan9front/deae8939583d83fd798fca97665e0e94656c3ee8/commit.html | Patch |
| https://github.com/9fans/plan9port/issues/711 | Exploit Issue Tracking Patch Vendor Advisory |
| https://github.com/9fans/plan9port/issues/711#issuecomment-2819905220 | Patch |
| https://github.com/user-attachments/files/19698361/plan9port_crash_2.txt | Exploit |
| https://vuldb.com/?ctiid.315157 | Permissions Required VDB Entry |
| https://vuldb.com/?id.315157 | Third Party Advisory VDB Entry |
| https://vuldb.com/?submit.607685 | Third Party Advisory VDB Entry |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-7209 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-7209
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-7209 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-7209 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 02, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:a:9fans:plan9port:*:*:*:*:*:*:*:* versions up to (including) 2025-03-29 Added Reference Type VulDB: https://git.9front.org/plan9front/plan9front/deae8939583d83fd798fca97665e0e94656c3ee8/commit.html Types: Patch Added Reference Type VulDB: https://github.com/9fans/plan9port/issues/711 Types: Exploit, Issue Tracking, Patch, Vendor Advisory Added Reference Type VulDB: https://github.com/9fans/plan9port/issues/711#issuecomment-2819905220 Types: Patch Added Reference Type VulDB: https://github.com/user-attachments/files/19698361/plan9port_crash_2.txt Types: Exploit Added Reference Type VulDB: https://vuldb.com/?ctiid.315157 Types: Permissions Required, VDB Entry Added Reference Type VulDB: https://vuldb.com/?id.315157 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/?submit.607685 Types: Third Party Advisory, VDB Entry -
New CVE Received by [email protected]
Jul. 09, 2025
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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 Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Added CVSS V2 (AV:L/AC:L/Au:S/C:N/I:N/A:P) Added CWE CWE-476 Added CWE CWE-404 Added Reference https://git.9front.org/plan9front/plan9front/deae8939583d83fd798fca97665e0e94656c3ee8/commit.html Added Reference https://github.com/9fans/plan9port/issues/711 Added Reference https://github.com/9fans/plan9port/issues/711#issuecomment-2819905220 Added Reference https://github.com/user-attachments/files/19698361/plan9port_crash_2.txt Added Reference https://vuldb.com/?ctiid.315157 Added Reference https://vuldb.com/?id.315157 Added Reference https://vuldb.com/?submit.607685