What’s Vulnerable › Vulnerabilities

CVE-2022-36974

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 84.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-03-29 · updated 2026-06-17
• Weakness: CWE-502

Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ivanti Avalanche 6.3.2.3490. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the Web File Server service. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-15330.

Affected products

• Ivanti Avalanche: from 6.3.2.3490 before 6.3.4 — fixed in 6.3.4

How to fix

Upgrade to a fixed version: Ivanti Avalanche 6.3.4. Check the vendor advisory for mitigations.

References

• https://download.wavelink.com/Files/avalanche_v6.3.4_release_notes.txt
• https://www.zerodayinitiative.com/advisories/ZDI-22-779/
• https://download.wavelink.com/Files/avalanche_v6.3.4_release_notes.txt
• https://www.zerodayinitiative.com/advisories/ZDI-22-779/

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