CVE-2021-35217

What it is

Insecure Deseralization of untrusted data remote code execution vulnerability was discovered in Patch Manager Orion Platform Integration module and reported to us by ZDI. An Authenticated Attacker could exploit it by executing WSAsyncExecuteTasks deserialization of untrusted data.

At a glance

Exploitability

Can be exploited from the same network segment with a low-privilege account. High risk of data exposure, data tampering.

Exploit odds

72.8% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2021-06-22 00:00 UTC ReservedThe CVE id was reserved by its CNA
2. 2021-09-08 14:15 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2021-09-09 14:15 UTC Fix referencedNVD first recorded a patch, advisory or mitigation link
4. 2026-06-17 03:57 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 72.8% in the next 30 days (EPSS).
• Severity: 8.9 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2021-09-08 14:15 UTC

Last modified

2026-06-17 03:57 UTC

Exploit probability

72.8% · EPSS, next 30 days

Weakness

CWE-502 · Unsafe deserialization

Record status

Modified

Affected

• Solarwinds Patch Manager ≤ 2020.2.5

Attack profile CVSS 3.1 · 8.9

Attack vector

Adjacent network

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

Low

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-35217.md and follow it. Check whether this project is affected by CVE-2021-35217. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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