Is CVE-2021-20435 in the CISA KEV catalog?

No. CVE-2021-20435 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-20435?

CVE-2021-20435 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-20435?

CVE-2021-20435 has an EPSS score of 0.13% (3th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-20435?

Upgrade security verify bridge to 1.0.7 or later.

CVE & CISA-KEV Catalog

CVE-2021-20435

MEDIUM

5.5

CVSS v3

NVD

Description

IBM Security Verify Bridge 1.0.5.0 does not properly validate a certificate which could allow a local attacker to obtain sensitive information that could aid in further attacks against the system. IBM X-Force ID: 196355.

CWE-295Improper Certificate Validation

How to fix

Remediation Available

security verify bridgeNVD

Affected:< 1.0.7Fixed in:1.0.7CVE-2021-20435derived 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

0.13%probability of exploitation in 30 days

3rdpercentile

Low risk: more likely to be exploited than 3% of all known CVEs.

References

Patch1

ibm.com

Vendor Advisory1

exchange.xforce.ibmcloud.com

Related Vulnerabilities

Other CWE-295 (Improper Certificate Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-4000	Low	3.7	100%	-	Fix
CVE-2020-0601	High	8.1	89%	KEV	Fix
CVE-2009-3555	Critical	9.8	87%	-	Fix
CVE-2022-26923	High	8.8	83%	KEV	Fix
CVE-2023-27823	Critical	9.8	53%	-	-
CVE-2022-42979	High	8.8	24%	-	-

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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.