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CVE-2026-103432

apcupsd through 3.14.14 has an sscanf stack-based buffer overflow in getupsvar() in src/cgi...

8.1 High

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.38%Down 0.2 points since Oct 1, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.1

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.

Record
CVE-2026-103432
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-121
Updated
2026-11-02
EUVDEUVD-2026-90027 8.1

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.

Record
EUVD-2026-90027
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-mx74-w6g6-vppg 8.1

apcupsd through 3.14.14 has an sscanf stack-based buffer overflow in getupsvar() in src/cgi...

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.

Record
GHSA-mx74-w6g6-vppg
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-121
Updated
2026-11-02
NVD 8.1

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.

Record
CVE-2026-103432
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-121
Updated
2026-11-02
OSV 8.1

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.

Record
CVE-2026-103432
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-121
Updated
2026-11-02
OSVDEBIAN-CVE-2026-103432 8.1

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.

Record
DEBIAN-CVE-2026-103432
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-103432 8.1

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.

Record
UBUNTU-CVE-2026-103432
CVSS 3.1
8.1 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
apcupsd
Debian:12
 All versions, plus listed versions
3.14.14-3.13.14.14-43.14.14-53.14.14-63.14.14-7
 None known
apcupsd
Debian:13
 All versions, plus listed versions
3.14.14-53.14.14-63.14.14-7
 None known
apcupsd
Debian:14
 All versions, plus listed versions
3.14.14-53.14.14-63.14.14-7
 None known
apcupsd
Ubuntu:16.04:LTS
 All versions, plus listed versions
3.14.12-1.1
 None known
apcupsd
Ubuntu:18.04:LTS
 All versions, plus listed versions
3.14.14-0.33.14.14-13.14.14-2
 None known
apcupsd
Ubuntu:20.04:LTS
 All versions, plus listed versions
3.14.14-33.14.14-3build1
 None known
apcupsd
Ubuntu:22.04:LTS
 All versions, plus listed versions
3.14.14-3.13.14.14-3.1build1
 None known
apcupsd
Ubuntu:24.04:LTS
 All versions, plus listed versions
3.14.14-3.1build13.14.14-3.1build2
 None known
apcupsd
Ubuntu:26.10
 All versions, plus listed versions
3.14.14-73.14.14-7build1
 None known
apcupsd
Ubuntu:26.04:LTS
 All versions, plus listed versions
3.14.14-53.14.14-63.14.14-7
 None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-103432 is a high vulnerability (CVSS 8.1) in Apcupsd, published September 30, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 32nd percentile. No source names a fixed version.

References

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