Is CVE-2021-27918 in the CISA KEV catalog?

No. CVE-2021-27918 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-27918?

CVE-2021-27918 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-27918?

CVE-2021-27918 has an EPSS score of 2.54% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-27918?

Upgrade golang-1.15 on debian 11 to 1.15.9-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-27918

HIGHEPSS 83th pctl

7.5

CVSS v3

NVD

Description

encoding/xml in Go before 1.15.9 and 1.16.x before 1.16.1 has an infinite loop if a custom TokenReader (for xml.NewTokenDecoder) returns EOF in the middle of an element. This can occur in the Decode, DecodeElement, or Skip method.

CWE-835

How to fix

Remediation Available

golang-1.15Debian

Fixed in:1.15.9-1CVE-2021-27918

Go Programming LanguageWindows application

Affected:1.16.0 1.16.1Fixed in:1.16.1https://go.dev

Affected:1.15.9Fixed in:1.15.9https://go.dev

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

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.54%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Third-Party Advisory2

Related Vulnerabilities

Other CWE-835 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-13935	High	7.5	88%	-	Fix
CVE-2020-36227	High	7.5	78%	-	Fix
CVE-2022-0778	High	7.5	71%	-	Fix
CVE-2019-14241	High	7.5	70%	-	-
CVE-2017-16944	High	7.5	63%	-	Fix
CVE-2024-20353	High	8.6	63%	KEV	-

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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.