Is CVE-2021-30184 in the CISA KEV catalog?

No. CVE-2021-30184 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-30184?

CVE-2021-30184 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-30184?

CVE-2021-30184 has an EPSS score of 1.77% (75th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-30184?

Upgrade gnuchess on debian 11 to 6.2.7-1+deb11u1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-30184

HIGHEPSS 75th pctl

7.8

CVSS v3

NVD

Description

GNU Chess 6.2.7 allows attackers to execute arbitrary code via crafted PGN (Portable Game Notation) data. This is related to a buffer overflow in the use of a .tmp.epd temporary file in the cmd_pgnload and cmd_pgnreplay functions in frontend/cmd.cc.

CWE-120Classic Buffer Overflow

How to fix

Remediation Available

gnuchessDebian

Fixed in:6.2.7-1+deb11u1CVE-2021-30184

Fixed in:6.2.7-1+deb12u1CVE-2021-30184

Fixed in:6.2.9-0.1CVE-2021-30184

gnuchessUbuntu

Fixed in:6.2.7-1+deb11u1build0.22.04.1USN-7336-1

Fixed in:6.2.7-1+deb11u1build0.24.04.1USN-7336-1

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 RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.77%probability of exploitation in 30 days

75thpercentile

Elevated risk: more likely to be exploited than 75% of all known CVEs.

References

Patch1

lists.gnu.org

Exploit1

lists.gnu.org

Third-Party Advisory1

security.gentoo.org

Other references4

Related Vulnerabilities

Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0195	Medium	6.8	100%	-	Fix
CVE-2017-7269	Critical	9.8	100%	KEV	-
CVE-2019-11043	High	8.7	99%	KEV + Ransom	Fix
CVE-2011-4862	High	10.0	95%	-	Fix
CVE-2007-5659	High	7.8	94%	KEV	Fix
CVE-2022-3786	High	7.5	91%	-	Fix

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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 2025-01-12.