CVE-2026-71979Public exploitNetwork attack vector

Unauthenticated daemon crash via XML tag mismatch

Published Aug 17, 2026 · Updated Aug 17, 2026

Stack buffer overflow in INDI Server through 2.2.4.2 allows remote attackers to crash the daemon via malformed XML on TCP/7624. In libs/indicore/lilxml.cpp, oneXMLchar() formats a closing-tag mismatch error with sprintf() into the caller's 1024-byte err buffer in indiserver/MsgQueue.cpp while both tag names come directly from growString()-extended XML input. Any unauthenticated host that can reach the service can terminate indiserver and drop all active client and driver sessions; published evidence supports service interruption, not code execution.

CVSS severity8.7
High
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in INDI Server through 2.2.4.2 allows remote attackers to crash the daemon via malformed XML on TCP/7624. In libs/indicore/lilxml.cpp, oneXMLchar() formats a closing-tag mismatch error with sprintf() into the caller's 1024-byte err buffer in indiserver/MsgQueue.cpp while both tag names come directly from growString()-extended XML input. Any unauthenticated host that can reach the service can terminate indiserver and drop all active client and driver sessions; published evidence supports service interruption, not code execution.

The record

CVE
CVE-2026-71979
Published
Aug 17, 2026
Updated
Aug 17, 2026
Vendor
INDI Library
Product
INDI Server
Classifications
CWE-121, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.2.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

INDI Library · INDI Serverversion=0 <=2.2.4.2

Published CVSS scores

7.5VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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