Buffer overflow in Indilib Indi
CVE-2026-71979
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (45.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.001
Affected products
- Indilib Indi — versions 0, 96bbd7f564bbb128a129019e44eadd40dd49cff9
Weakness classification (CWE)
References
- github.com/indilib/indi/issues/2472 (issue-tracking)
- github.com/indilib/indi/commit/96bbd7f564bbb128a129019e44eadd40dd49cff9 (patch)
- www.vulncheck.com/advisories/indi-indiserver-stack-buffer-overflow-via-xml-tag-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-71979?
- CVE-2026-71979 is a high-severity vulnerability in Indilib Indi, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-08-17.
- How severe is CVE-2026-71979?
- High severity. CVSS v3 base score is 7.5 out of 10.