CVE-2026-71979 INDI indiserver 2.2.4.2 Stack Buffer Overflow via XML Tag Parsing
Remote attackers can crash the INDI server daemon by sending malformed XML packets, disrupting all active sessions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-71979?
CVE-2026-71979 is a high-severity memory corruption vulnerability in indilib indi, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-121
Which versions are affected by CVE-2026-71979?
How do I fix CVE-2026-71979?
No fix has been published for CVE-2026-71979 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-71979 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-71979 exists.
Sources
Also known as GHSA-rpc6-j92g-4x56.