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CVE-2022-40022

90
FAUCET Score

CVE-2022-40022 is a critical command injection vulnerability affecting Microchip Technology (Microsemi) SyncServer S650 and its firmware. With a CVSS score of 9.8, this vulnerability allows unauthenticated attackers to execute arbitrary commands remotely with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, exploit modules are publicly available in Metasploit and Nuclei, indicating a high potential for exploitation, despite a lack of observed active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microchip:syncserver_s650_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
92.47%
Probability of exploitation in next 30 days
EPSS Percentile
99.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Symmetricom SyncServer Unauthenticated Remote Command Execution · Aug 31, 2022
Nuclei: CVE-2022-40022 · Jun 22, 2023
This CVE's current EPSS score of 0.9247 is in the 99th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/172907/Symmetricom-SyncServer-Unauthenticated-Remote-Command-Execution.html
microsemi.com / campaigns/network-time-servers/S650p/%3Fgd%3D1&id=5&gclid=Cj0KCQjwjbyYBhCdARIsAArC6LL-202ej5YfDB5lMIMSZ2735qjo5yaj2i-PrvLv2Cnh_kIJtFJ0oF8aAlMpEALw_wcB
Product
microsemi.com / campaigns/network-time-servers/syncserver-s600
Product
microsemi.com / document-portal/doc_download/135737-datasheet-syncserver-s650
Product
securifera.com / advisories/CVE-2022-40022
Third Party Advisory