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CVE-2021-45090

32
FAUCET Score

CVE-2021-45090 is a critical remote code execution vulnerability affecting Stormshield Endpoint Security versions prior to 2.1.2. With a CVSS score of 9.8, it presents a severe risk, allowing unauthenticated attackers to execute arbitrary code over the network with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion, indicating awareness and potential interest among security researchers. Despite its high severity and community attention, it is not listed in CISA's KEV catalog and has not received media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.0, < 2.1.2CPE matchmatch criteria
cpe:2.3:a:stormshield:endpoint_security:*:*:*:*:*:*:*:*

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
2.93%
Probability of exploitation in next 30 days
EPSS Percentile
85.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0293 is in the 77th percentile among its peer group of 36,897 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

advisories.stormshield.eu / 2021-070
Vendor Advisory