CVE-2024-37399

Avalanche vulnerability

CVSS

7.5

EPSS

27.8%

EPSS pct

98th

Exploited

No known

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.

Affected vendor

Ivanti

Affected product

Avalanche

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness type (CWE)

CWE-476 — NULL Pointer Dereference

Published

2024-08-14

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 27.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2024-37399

Confirm whether Ivanti Avalanche is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2024-37399.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2024-37399

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2024-37399 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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