CVE-2026-103436

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-103436
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-30 16:17:09 UTC
Updated2026-09-30 17:32:07 UTC
Descriptionapcupsd 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.

Risk And Classification

Primary CVSS: v3.1 3.7 LOW from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Problem Types: CWE-457 | CWE-457 CWE-457 Use of Uninitialized Variable

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.7LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1CNACVSS3.7LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apcupsd Apcupsd affected 3.14.14 semver Not specified

References

ReferenceSourceLinkTags
sourceforge.net/projects/apcupsd [email protected] sourceforge.net
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com
github.com/therealbstern/apcupsd/blob/224d19d5faa508d04267f6135fe53d5080... [email protected] github.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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