VULNERABILITY INTELLIGENCE
CVE-2026-103436
CVSS score3.7 LOW
EPSS probability0.29%
CISA KEVNot currently listed
Published2026-09-30
Last modified2026-10-02
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
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.
Weakness classification
- cve@mitre.org: CWE-457