CVE-2021-21943

HIGHNVD 8.88.8—

8.8

A heap-based buffer overflow vulnerability exists in the XWD parser functionality of Accusoft ImageGear 19.10. A specially-crafted file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 79.0%
KEV: Not listed

Published

April 14, 2022

Last Modified

November 21, 2024

References (2)

talos-cna@ciscohttps://talosintelligence.com/vulnerability_reports/TALOS-2021-1373
af854a3a-2127-422b-91ae-364da2661108https://talosintelligence.com/vulnerability_reports/TALOS-2021-1373

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 23:50 UTCEG score recompute
2026-05-25 23:50 UTCGHSA enrichment
2026-05-24 16:49 UTCepss_batch

Frequently asked(5)

What is CVE-2021-21943?

CVE-2021-21943 is a high vulnerability published on April 14, 2022. A heap-based buffer overflow vulnerability exists in the XWD parser functionality of Accusoft ImageGear 19.10. A specially-crafted file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

When was CVE-2021-21943 disclosed?

CVE-2021-21943 was first published in the National Vulnerability Database on April 14, 2022, 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-2021-21943 actively exploited?

CVE-2021-21943 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-21943?

CVE-2021-21943 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2021-21943?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-21943, 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-21943

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CVE-2021-21943

📅 Published

🔄 Last Modified

🔗 References (2)