Cyber Resilience

CVE-2024-39815

Critical

Published: 12 August 2024

Published
12 August 2024
Modified
20 August 2024
KEV Added
Patch
CVSS Score v4 9.4 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:X/V:X/RE:X/U:X
EPSS Score 0.0078 74.2th percentile
Risk Priority 19 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-39815 is a critical-severity Improper Check or Handling of Exceptional Conditions (CWE-703) vulnerability in Vonets Var1200-H Firmware. Its CVSS base score is 9.4 (Critical).

Operationally, ranked in the top 25.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Improper check or handling of exceptional conditions vulnerability affecting Vonets industrial wifi bridge relays and wifi bridge repeaters, software versions 3.3.23.6.9 and prior, enable an unauthenticated remote attacker to cause a denial of service. A specially-crafted HTTP request to pre-authentication…

more

resources can crash the service.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

vonets
var1200-h firmware
≤ 3.3.23.6.9
vonets
var1200-l firmware
≤ 3.3.23.6.9
vonets
var600-h firmware
≤ 3.3.23.6.9
vonets
vap11ac firmware
≤ 3.3.23.6.9
vonets
vap11g-500s firmware
≤ 3.3.23.6.9
vonets
vbg1200 firmware
≤ 3.3.23.6.9
vonets
vap11s-5g firmware
≤ 3.3.23.6.9
vonets
vap11s firmware
≤ 3.3.23.6.9
vonets
var11n-300 firmware
≤ 3.3.23.6.9
vonets
vap11g-300 firmware
≤ 3.3.23.6.9
+4 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-703

Implements explicit check and handling for the exceptional condition of audit logging process failure.

addresses: CWE-703

Establishing and monitoring system metrics with correlation and response actions helps identify and address improper handling of exceptional conditions.

addresses: CWE-703

Provides a defined response to detected conditions by restricting operation, ensuring exceptional conditions are handled rather than ignored or mishandled.

addresses: CWE-703

Contingency training equips users with defined procedures to check and respond to exceptional conditions during disruptions, reducing exploitation of mishandled errors.

addresses: CWE-703

Testing verifies the system's ability to detect, handle, and recover from exceptional conditions as part of the plan, reducing exploitability of improper exception handling.

addresses: CWE-703

Regular updates keep contingency procedures aligned with system changes, providing structured handling for exceptional conditions that would otherwise allow unmitigated exploitation.

addresses: CWE-703

Policy defines checks and handling for exceptional conditions arising from security incidents.

addresses: CWE-703

Performing IR tests ensures exceptional conditions are properly checked and handled to enable effective response.

References