SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2024-37399

A NULL pointer dereference in WLAvalancheService in Ivanti Avalanche 6.3.1 allows a remote unauthenticated attacker to crash the service, resulting in a DoS.

HIGH 7.5EPSS 27.8%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 27.8%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

A NULL pointer dereference in WLAvalancheService in Ivanti Avalanche 6.3.1 allows a remote unauthenticated attacker to crash the service, resulting in a DoS.

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
27.79% probability · 98th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-476
Affected
ivanti/avalanche
Source
support@hackerone.com
EPSS trend
0%15%30%3 November 2026: 27.79%3 November 20263 November 2026

EPSS 27.8% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.