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CVE-2021-35217

69
FAUCET Score

CVE-2021-35217 describes a critical remote code execution vulnerability stemming from insecure deserialization of untrusted data within the SolarWinds Patch Manager Orion Platform Integration module. An authenticated attacker can exploit this flaw by executing WSAsyncExecuteTasks, leading to arbitrary code execution. With a CVSS score of 8.8 (High), this vulnerability presents a significant risk due to its low attack complexity and high impact on confidentiality, integrity, and availability. While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, its high FAUCET Risk Score of 98/100 indicates its severe potential.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2020.2.5CPE matchmatch criteria
cpe:2.3:a:solarwinds:patch_manager:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.9HIGH

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
73.85%
Probability of exploitation in next 30 days
EPSS Percentile
99.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.7385 is in the 99th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

documentation.solarwinds.com / en/success_center/orionplatform/content/core-secure-configuration.htm
Vendor Advisory
documentation.solarwinds.com / en/success_center/orionplatform/content/release_notes/orion_platform_2020-2-6_release_notes.htm
Release NotesVendor Advisory
solarwinds.com / trust-center/security-advisories/cve-2021-35217
Vendor Advisory
zerodayinitiative.com / advisories/ZDI-21-1247
Third Party AdvisoryVDB Entry