How severe is CVE-2021-35957?

CVE-2021-35957 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-35957 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35957?

CVE-2021-35957 affects Stormshield Endpoint Security. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-35957?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-35957 published?

CVE-2021-35957 was published on 2021-07-13 and last updated on 2026-06-17.

CVE-2021-35957

CVE-2021-35957 is a medium-severity vulnerability in Stormshield Endpoint Security with a CVSS 3.x base score of 6.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-427.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
CVSS v2: 4.6
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-427
Affected product: Stormshield Endpoint Security
Published: 2021-07-13
Last modified: 2026-06-17

Description

Stormshield Endpoint Security Evolution 2.0.0 through 2.0.2 does not accomplish the intended defense against local administrators who can replace the Visual C++ runtime DLLs (in %WINDIR%\system32) with malicious ones.

Frequently asked questions

What is CVE-2021-35957?: Stormshield Endpoint Security Evolution 2.0.0 through 2.0.2 does not accomplish the intended defense against local administrators who can replace the Visual C++ runtime DLLs (in %WINDIR%\system32) with malicious ones.
How severe is CVE-2021-35957?: CVE-2021-35957 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-35957 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35957?: CVE-2021-35957 affects Stormshield Endpoint Security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-35957?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-35957 published?: CVE-2021-35957 was published on 2021-07-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:stormshield:endpoint_security:*:*:*:*:*:*:*:*

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Other CWE-427 (Uncontrolled Search Path Element) vulnerabilities

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CVE-2023-53959 — Critical (CVSS 9.8): FileZilla Client 3.63.1 contains a DLL hijacking vulnerability that allows attackers to execute malicious code by…
CVE-2025-65741 — Critical (CVSS 9.8): Sublime Text 3 Build 3208 or prior for MacOS is vulnerable to Dylib Injection. An attacker could compile a .dylib file…
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