Buffer overflow in Shibby Tomato

CVE-2026-15545

A vulnerability was identified in Shibby Tomato up to 1.28.0000. Affected by this vulnerability is the function main of the file www/apcupsd/tomatodata.cgi of the component apcupsd. Such manipulation leads to out-of-bounds write. The attack may be launched remotely. The exploit is publicly available and might be used. This project is superseded by FreshTomato.

Vulnerability class: Buffer Overflow

Published · last modified .

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: 0.007 (53.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-15545: held from 0.007 to 0.007.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-15545?
CVE-2026-15545 is a high-severity vulnerability in Shibby Tomato, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-07-13.
How severe is CVE-2026-15545?
High severity. CVSS v3 base score is 8.8 out of 10.