CVE-2026-103436
Low
Description
apcupsd through 3.14.14 discloses uninitialized stack memory in getupsvar() in src/cgi/upsfetch.c (used by upsstats.cgi, multimon.cgi, and upsfstats.cgi. On the single-field path, when the matched STATUS line has fewer than three whitespace-separated tokens, sscanf("%*s %*s %s", answer) performs no assignment but the function returns success, and thus the caller prints the uninitialized destination buffer into the HTTP response.
SeverityLow
CVSS3.7
Exploit probability—
ProductApcupsd
PublishedSep 30, 2026
First seenSep 30, 2026
Weakness typeCWE-457CWE-457
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apcupsd apcupsd | v ≤ 3.14.14 | — |
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