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Vulnerability record · CVE-2026-71979 · published 17 August 2026

CVE-2026-71979: Stack-based buffer overflow vulnerability

INDI (Instrument Neutral Distributed Interface) indiserver through 2.2.4.2, fixed in commit 96bbd7f, contains a stack buffer overflow vulnerability that allows unauthenticated remote attackers to crash the daemon by sending malformed XML with mismatched tags whose names exceed 1024 bytes. Attackers can send a single TCP packet on port 7624 with mismatched XML tags to trigger an unbounded sprintf() write into a fixed 1024-byte stack buffer in MsgQueue.cpp, terminating the daemon and disrupting all active client and driver sessions.

8.7 CVSS 4.0 High EPSS 0.58% · top 54.3% CWE-121 · Stack-based buffer overflow Deferred
8.7CVSS 4.0 base score
0.58%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
24 Sep 2026Last modified by NVD

Description

INDI (Instrument Neutral Distributed Interface) indiserver through 2.2.4.2, fixed in commit 96bbd7f, contains a stack buffer overflow vulnerability that allows unauthenticated remote attackers to crash the daemon by sending malformed XML with mismatched tags whose names exceed 1024 bytes. Attackers can send a single TCP packet on port 7624 with mismatched XML tags to trigger an unbounded sprintf() write into a fixed 1024-byte stack buffer in MsgQueue.cpp, terminating the daemon and disrupting all active client and driver sessions.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/indilib/indi/commit/96bbd7f564bbb128a129019e44eadd40dd49cff9
https://github.com/indilib/indi/issues/2472
https://www.vulncheck.com/advisories/indi-indiserver-stack-buffer-overflow-via-xml-tag-parsing
https://github.com/indilib/indi/issues/2472

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Source: NIST National Vulnerability Database (record CVE-2026-71979), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.