Is CVE-2021-1998 in the CISA KEV catalog?

No. CVE-2021-1998 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-1998?

CVE-2021-1998 has a CVSS v3 base score of 3.8 (LOW).

What is the EPSS score for CVE-2021-1998?

CVE-2021-1998 has an EPSS score of 1.59% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-1998?

Upgrade mysql-8.0 on debian unstable to 8.0.23-1 or later.

CVE & CISA-KEV Catalog

CVE-2021-1998

LOWEPSS 73th pctl

3.8

CVSS v3

NVD

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.20 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of MySQL Server accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 3.8 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L).

How to fix

Remediation Available

mysql-8.0Debian

Fixed in:8.0.23-1CVE-2021-1998

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 RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityLow

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

Exploit Intelligence

1.59%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Vendor Advisory1

oracle.com

Third-Party Advisory2

Other references2

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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.