Is CVE-2021-27756 in the CISA KEV catalog?

No. CVE-2021-27756 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-27756?

CVE-2021-27756 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-27756?

CVE-2021-27756 has an EPSS score of 0.56% (42th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-27756?

Upgrade bigfix compliance to 2.0.6 or later.

CVE & CISA-KEV Catalog

CVE-2021-27756

HIGH

7.5

CVSS v3

NVD

Description

"TLS-RSA cipher suites are not disabled in BigFix Compliance up to v2.0.5. If TLS 2.0 and secure ciphers are not enabled then an attacker can passively record traffic and later decrypt it."

CWE-327

How to fix

Remediation Available

bigfix complianceNVD

Affected:>= 2.0, < 2.0.6Fixed in:2.0.6CVE-2021-27756derived 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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.56%probability of exploitation in 30 days

42ndpercentile

Moderate risk: more likely to be exploited than 42% of all known CVEs.

References

Vendor Advisory1

support.hcltechsw.com

Related Vulnerabilities

Other CWE-327 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-2808	Low	3.7	74%	-	Fix
CVE-2023-34039	Critical	9.8	64%	-	Fix
CVE-2016-6602	Critical	9.8	55%	-	-
CVE-2014-8687	Critical	9.8	44%	-	-
CVE-2020-13777	High	7.4	18%	-	Fix
CVE-2017-17428	Medium	5.9	15%	-	-

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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.