CVE & CISA-KEV Catalog

CVE-2021-1237

HIGH
7.8
CVSS v3
NVD

Description

A vulnerability in the Network Access Manager and Web Security Agent components of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL injection attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by inserting a configuration file in a specific path in the system which, in turn, causes a malicious DLL file to be loaded when the application starts. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges.

How to fix

Remediation Available
anyconnect secure mobility clientNVD
Affected:< 4.9.04043Fixed in:4.9.04043CVE-2021-1237derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

0.40%probability of exploitation in 30 days
32ndpercentile

Low risk: more likely to be exploited than 32% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-427 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2020-27955Critical9.883%--
CVE-2017-6517Critical9.846%--
CVE-2020-3153Medium6.528%KEV + RansomFix
CVE-2024-48990High7.820%-Fix
CVE-2019-9491High7.813%--
CVE-2020-3433High7.810%KEV + RansomFix
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Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.