Is CVE-2021-33477 in the CISA KEV catalog?

No. CVE-2021-33477 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-33477?

CVE-2021-33477 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-33477?

CVE-2021-33477 has an EPSS score of 4.01% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-33477?

Upgrade eterm on debian 11 to 0.9.6-6.1 or later.

CVE & CISA-KEV Catalog

CVE-2021-33477

HIGHEPSS 89th pctl

8.8

CVSS v3

NVD

Description

rxvt-unicode 9.22, rxvt 2.7.10, mrxvt 0.5.4, and Eterm 0.9.7 allow (potentially remote) code execution because of improper handling of certain escape sequences (ESC G Q). A response is terminated by a newline.

CWE-755

How to fix

Remediation Available

etermDebian

Fixed in:0.9.6-6.1CVE-2021-33477

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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

4.01%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

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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.