Bug 2544010 (CVE-2026-103432)

Summary: CVE-2026-103432 apcupsd: apcupsd: Arbitrary code execution via stack-based buffer overflow in getupsvar
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in apcupsd. A remote attacker could exploit a stack-based buffer overflow vulnerability in the web monitoring interface by supplying specially crafted data during variable parsing. A successful attack could allow the attacker to execute arbitrary code on the system or cause a denial of service (DoS) by crashing the application.
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Bug Depends On: 2544311, 2544313    
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Description OSIDB Bzimport 2026-09-30 15:55:45 UTC
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.