What is CVE-2025-7208?

CVE-2025-7208 is a medium-severity vulnerability in 9fans Plan9port, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2025-07-09.

How severe is CVE-2025-7208?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in 9fans Plan9port

CVE-2025-7208

A vulnerability was found in 9fans plan9port up to 9da5b44. It has been classified as critical. This affects the function edump in the library /src/plan9port/src/libsec/port/x509.c. The manipulation leads to heap-based buffer overflow. 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 b3e06559475b0130a7a2fb56ac4d131d13d2012f. It is recommended to apply a patch to fix this issue.

Vulnerability class: Buffer Overflow

Published 2025-07-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.006 (46.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

9fans Plan9port — versions 9da5b44

Weakness classification (CWE)

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
drive.google.com/drive/folders/1kedwNLNDiFQB2OAp7S-ZKYoF7nxfIZGO (related, Product)
github.com/9fans/plan9port/issues/710 (issue-tracking, Patch)
github.com/user-attachments/files/19698345/plan9port_crash_1.txt (Exploit, exploit)
git.9front.org/plan9front/plan9front/b3e06559475b0130a7a2fb56ac4d131d13d2012f/c… (Patch, patch)

Frequently asked questions

What is CVE-2025-7208?: CVE-2025-7208 is a medium-severity vulnerability in 9fans Plan9port, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2025-07-09.
How severe is CVE-2025-7208?: Medium severity. CVSS v3 base score is 5.5 out of 10.