CVE-2025-7209 Details
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.
A null pointer dereference vulnerability has been identified in 9fans plan9port versions prior to commit 9da5b44. The issue arises in the X.509 value_decode function within the library src/libsec/port/x509.c. This vulnerability requires local access to exploit and has been publicly disclosed, with an available proof-of-concept exploit.
Users are advised to update to the latest version of plan9port, which includes the patch for this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 9, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.9front.org/plan9front/plan9front/deae8939583d83fd798fca97665e0e94656c3ee8/commit.html | [email protected] | Patch |
| https://github.com/9fans/plan9port/issues/711 | [email protected] | ExploitIssue TrackingPatchVendor Advisory |
| https://github.com/9fans/plan9port/issues/711#issuecomment-2819905220 | [email protected] | Patch |
| https://github.com/user-attachments/files/19698361/plan9port_crash_2.txt | [email protected] | Exploit |
| https://vuldb.com/?ctiid.315157 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.315157 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.607685 | [email protected] | Third Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
| CWE-404 | Improper Resource Shutdown or Release | [email protected] |
| CWE-476 | NULL Pointer Dereference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| 9fans plan9port | <= 2025-03-29 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Feb 2, 2026 | Initial Analysis | [email protected] |
| Jul 9, 2025 | New CVE Received | [email protected] |