When was CVE-2021-33477 disclosed?

CVE-2021-33477 was first published in the National Vulnerability Database on May 20, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-33477 actively exploited?

CVE-2021-33477 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

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

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

How do I remediate CVE-2021-33477?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-33477, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

CVE-2021-33477

HIGHNVD 8.88.8—

8.8

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.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 79.2%
KEV: Not listed

References (40)

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CVE-2021-33477

Published

Last Modified

References (40)

Weakness Classification(1)

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-33477?

CVE-2021-33477

📅 Published

🔄 Last Modified

🔗 References (40)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-33477?

Published

Last Modified

References (40)

Frequently asked(5)