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CVE-2020-23621

32
FAUCET Score

CVE-2020-23621 is a critical deserialization vulnerability affecting all versions of the SVI MS Management System's Java Remote Management Interface. Attackers can exploit this flaw by sending a specially crafted serialized Java object, leading to arbitrary code execution. With a CVSS score of 9.8 (CRITICAL), this vulnerability is easily exploitable over the network with no user interaction, allowing for complete compromise of confidentiality, integrity, and availability. While there are no known public exploits in Metasploit or ExploitDB, and it's not on the KEV catalog, the vulnerability has garnered significant community discussion, indicating potential interest in developing exploits.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:squire-technologies:svi_ms_management_system:-:*:*:*:*:*:*:*

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
2.00%
Probability of exploitation in next 30 days
EPSS Percentile
78.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0200 is in the 67th percentile among its peer group of 36,862 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

gist.github.com / fuzzKitty/dd1c6fac4f36e70ea64814732726aaea
Third Party Advisory
github.com / joaomatosf/jexboss
Third Party Advisory
squire-technologies.co.uk
Vendor Advisory