CVE-2026-39929
DoS in Lakeside SysTrack Agent via crafted UDP packet
Is CVE-2026-39929 being exploited?
Not confirmed. CVE-2026-39929 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 1.4% probability of exploitation in the next 30 days.
How severe is CVE-2026-39929?
CVE-2026-39929 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-39929?
Yes. A fix has been recorded for CVE-2026-39929. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-39929 affect?
CVE-2026-39929 affects Lakeside SysTrack Agent (versions prior to 11.2.1.28, 11.3.0.38, 11.4.0.24, 11.5.0.15). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-39929?
Upgrade to fixed builds
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote DoS: attacker sends malformed UDP payload, crashing the agent (offset 0x4).
Patch when possible
- affected< 11.2.1.28
- affected>= 11.3.0.xxx and < 11.3.0.38
- affected>= 11.4.0.xxx and < 11.4.0.24
- affected>= 11.5.0.xxx and < 11.5.0.15
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.