How severe is CVE-2024-37399?

CVE-2024-37399 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-37399 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-37399?

CVE-2024-37399 primarily affects Ivanti Avalanche. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-37399?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-37399 have an EU (EUVD) identifier?

Yes. CVE-2024-37399 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-36635.

When was CVE-2024-37399 published?

CVE-2024-37399 was published on 2024-08-14 and last updated on 2026-06-17.

CVE-2024-37399

CVE-2024-37399 is a high-severity vulnerability in Ivanti Avalanche with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 28% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 28% (98th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-36635
Weakness: CWE-476
Affected product: Ivanti Avalanche
Published: 2024-08-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2024-37399?: CVE-2024-37399 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-37399 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-37399?: CVE-2024-37399 primarily affects Ivanti Avalanche. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-37399?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-37399 have an EU (EUVD) identifier?: Yes. CVE-2024-37399 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-36635.
When was CVE-2024-37399 published?: CVE-2024-37399 was published on 2024-08-14 and last updated on 2026-06-17.

References

https://forums.ivanti.com/s/article/Security-Advisory-Ivanti-Avalanche-6-4-4-CVE-2024-38652-CVE-2024-38653-CVE-2024-36136-CVE-2024-37399-CVE-2024-37373

Affected products (20)

cpe:2.3:a:ivanti:avalanche:6.3.1:*:*:*:premise:*:*:*
cpe:2.3:a:ivanti:avalanche:6.3.1.1507:*:*:*:premise:*:*:*
cpe:2.3:a:ivanti:avalanche:6.3.2:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:avalanche:6.3.2:*:*:*:*:windows:*:*
cpe:2.3:a:ivanti:avalanche:6.3.2:*:*:*:premise:*:*:*
cpe:2.3:a:ivanti:avalanche:6.3.2.3490:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:avalanche:6.3.2.3490:*:*:*:premise:*:*:*
cpe:2.3:a:ivanti:avalanche:6.3.3:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:avalanche:6.3.3:*:*:*:premise:*:*:*
cpe:2.3:a:ivanti:avalanche:6.3.3.101:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:avalanche:6.3.3.101:*:*:*:premise:*:*:*
cpe:2.3:a:ivanti:avalanche:6.3.4:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:avalanche:6.3.4:*:*:*:premise:*:*:*
cpe:2.3:a:ivanti:avalanche:6.3.4.153:*:*:*:premise:*:*:*
cpe:2.3:a:ivanti:avalanche:6.4.0:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:avalanche:6.4.1:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:avalanche:6.4.1:*:*:*:premise:*:*:*
cpe:2.3:a:ivanti:avalanche:6.4.1.207:*:*:*:premise:*:*:*
cpe:2.3:a:ivanti:avalanche:6.4.1.236:*:*:*:premise:*:*:*
cpe:2.3:a:ivanti:avalanche:6.4.2:*:*:*:premise:*:*:*

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