MEDIUM
CVE-2021-35957
CWE-427Published: July 13, 2021· Updated: Jun 17, 2026
6.7
CVSS v3.1
Official 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.
Technical Analysis
CVE-2021-35957 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.7.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Affected Vendors & Products
stormshield1 product(s)
endpoint security
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (4)
→
https://advisories.stormshield.euVendor Advisory
→
https://advisories.stormshield.eu/2021-045/Vendor Advisory
→
https://advisories.stormshield.euVendor Advisory
→
https://advisories.stormshield.eu/2021-045/Vendor Advisory
Quick Facts
CVE IDCVE-2021-35957
CVSS Score6.7 / 10
SeverityMEDIUM
WeaknessCWE-427
CISA KEVNo
Affected1 vendor(s)
PublishedJul 13, 2021
Related CVEs (CWE-427)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-35957 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.