Is CVE-2021-1126 in the CISA KEV catalog?

No. CVE-2021-1126 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-1126?

CVE-2021-1126 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-1126?

CVE-2021-1126 has an EPSS score of 0.26% (17th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-1126?

Upgrade secure firewall management center to 6.7.0 or later.

CVE & CISA-KEV Catalog

CVE-2021-1126

MEDIUM

5.5

CVSS v3

NVD

Description

A vulnerability in the storage of proxy server credentials of Cisco Firepower Management Center (FMC) could allow an authenticated, local attacker to view credentials for a configured proxy server. The vulnerability is due to clear-text storage and weak permissions of related configuration files. An attacker could exploit this vulnerability by accessing the CLI of the affected software and viewing the contents of the affected files. A successful exploit could allow the attacker to view the credentials that are used to access the proxy server.

CWE-256 CWE-522 CWE-732Incorrect Permission Assignment for Critical Resource

How to fix

Remediation Available

secure firewall management centerNVD

Affected:< 6.7.0Fixed in:6.7.0CVE-2021-1126derived 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

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.26%probability of exploitation in 30 days

17thpercentile

Low risk: more likely to be exploited than 17% of all known CVEs.

References

Vendor Advisory1

tools.cisco.com

Related Vulnerabilities

Other CWE-256 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-28736	High	7.1	2.5%	-	-
CVE-2019-10921	High	7.5	2.4%	-	Fix
CVE-2017-16714	Critical	9.8	2.4%	-	Fix
CVE-2024-26165	High	8.8	1.9%	-	Fix
CVE-2020-8183	High	7.5	1.9%	-	Fix
CVE-2020-6961	Critical	10.0	1.6%	-	-

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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 2024-11-26.