Vulnerability · Published Sep 30, 2026 · Assigned by mitre
CVE-2026-103432
High 8.1
In plain English
A high-severity stack buffer overflow in apcupsd from apcupsd. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.4%top 67.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
apcupsd through 3.14.14 has an sscanf stack-based buffer overflow in getupsvar() in src/cgi/upsfetch.c (used by upsstats.cgi, multimon.cgi, and upsfstats.cgi), a related issue to CVE-2026-15544.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | apcupsd | no fix listed | DEBIAN-CVE-2026-103432 |
| Debian:13 | apcupsd | no fix listed | DEBIAN-CVE-2026-103432 |
| Debian:14 | apcupsd | no fix listed | DEBIAN-CVE-2026-103432 |
| Ubuntu:22.04:LTS | apcupsd | no fix listed | UBUNTU-CVE-2026-103432 |
| Ubuntu:24.04:LTS | apcupsd | no fix listed | UBUNTU-CVE-2026-103432 |
| Ubuntu:26.04:LTS | apcupsd | no fix listed | UBUNTU-CVE-2026-103432 |
| Ubuntu:26.10 | apcupsd | no fix listed | UBUNTU-CVE-2026-103432 |
Affected products (as reported)
Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H