What is CVE-2026-7503?

CVE-2026-7503 is a high-severity vulnerability in Code-Projects For Plugin, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-30.

How severe is CVE-2026-7503?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Code-Projects For Plugin

CVE-2026-7503

A vulnerability was detected in code-projects for Plugin 4.1.2cu.5137. The impacted element is the function setWiFiMultipleConfig in the library /lib/cste_modules/wireless.so of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument wepkey2 results in buffer overflow. The attack can be launched remotely. The exploit is now public and may be used.

Vulnerability class: Buffer Overflow

Published 2026-04-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (54.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.008 · change: +0.003

Affected products

Code-Projects For Plugin — versions 4.1.2cu.5137

Weakness classification (CWE)

References

vuldb.com/vuln/360313 (technical-description, vdb-entry)
vuldb.com/vuln/360313/cti (signature, permissions-required)
vuldb.com/submit/803120 (third-party-advisory)
github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A800R/02_Buffer_Overflow_setWiFiMu… (exploit)
code-projects.org/ (product)

Frequently asked questions

What is CVE-2026-7503?: CVE-2026-7503 is a high-severity vulnerability in Code-Projects For Plugin, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-30.
How severe is CVE-2026-7503?: High severity. CVSS v3 base score is 8.8 out of 10.