How severe is CVE-2024-23531?

CVE-2024-23531 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-2024-23531 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-23531?

CVE-2024-23531 affects Ivanti Avalanche. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-23531?

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-2024-23531 have an EU (EUVD) identifier?

Yes. CVE-2024-23531 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-21026.

When was CVE-2024-23531 published?

CVE-2024-23531 was published on 2024-04-19 and last updated on 2026-06-17.

CVE-2024-23531

CVE-2024-23531 is a high-severity vulnerability in Ivanti Avalanche with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-21026
Weakness: CWE-190
Affected product: Ivanti Avalanche
Published: 2024-04-19
Last modified: 2026-06-17

Description

An Integer Overflow vulnerability in WLInfoRailService component of Ivanti Avalanche before 6.4.3 allows an unauthenticated remote attacker to perform denial of service attacks. In certain rare conditions this could also lead to reading content from memory.

Frequently asked questions

What is CVE-2024-23531?: An Integer Overflow vulnerability in WLInfoRailService component of Ivanti Avalanche before 6.4.3 allows an unauthenticated remote attacker to perform denial of service attacks. In certain rare conditions this could also lead to reading content from memory.
How severe is CVE-2024-23531?: CVE-2024-23531 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-2024-23531 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-23531?: CVE-2024-23531 affects Ivanti Avalanche. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-23531?: 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-2024-23531 have an EU (EUVD) identifier?: Yes. CVE-2024-23531 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-21026.
When was CVE-2024-23531 published?: CVE-2024-23531 was published on 2024-04-19 and last updated on 2026-06-17.

References

https://forums.ivanti.com/s/article/Avalanche-6-4-3-Security-Hardening-and-CVEs-addressed?language=en_US

Affected products (1)

cpe:2.3:a:ivanti:avalanche:*:*:*:*:*:*:*:*

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