How severe is CVE-2023-32566?

CVE-2023-32566 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2023-32566 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-32566?

CVE-2023-32566 affects Ivanti Avalanche. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-32566?

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

When was CVE-2023-32566 published?

CVE-2023-32566 was published on 2023-08-10 and last updated on 2026-06-17.

CVE-2023-32566

CVE-2023-32566 is a critical-severity vulnerability in Ivanti Avalanche with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ivanti Avalanche
Published: 2023-08-10
Last modified: 2026-06-17

Description

An attacker can send a specially crafted request which could lead to leakage of sensitive data or potentially a resource-based DoS attack. Fixed in version 6.4.1.

Frequently asked questions

What is CVE-2023-32566?: An attacker can send a specially crafted request which could lead to leakage of sensitive data or potentially a resource-based DoS attack. Fixed in version 6.4.1.
How severe is CVE-2023-32566?: CVE-2023-32566 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2023-32566 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-32566?: CVE-2023-32566 affects Ivanti Avalanche. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-32566?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-32566 published?: CVE-2023-32566 was published on 2023-08-10 and last updated on 2026-06-17.

References

https://forums.ivanti.com/s/article/Avalanche-Vulnerabilities-Addressed-in-6-4-1?language=en_US

Affected products (1)

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

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