CVE-2021-33983

HIGHNVD 7.87.8—Trending — 3 sources updated this week

7.8

Buffer Overflow vulnerability in Dvidelabs flatcc v.0.6.0 allows local attacker to execute arbitrary code via the fltacc execution of the error_ref_sym function.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 25.9%
KEV: Not listed

Published

February 17, 2023

Last Modified

March 18, 2025

References (2)

cve@mitrehttps://github.com/dvidelabs/flatcc/issues/188
af854a3a-2127-422b-91ae-364da2661108https://github.com/dvidelabs/flatcc/issues/188

Weakness Classification(1)

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

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

Data Freshness Timeline

(refreshed 11× in last 7d / 11× 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.

2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 06:29 UTCEG score recompute
2026-05-25 06:29 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-33983?

CVE-2021-33983 is a high vulnerability published on February 17, 2023. Buffer Overflow vulnerability in Dvidelabs flatcc v.0.6.0 allows local attacker to execute arbitrary code via the fltacc execution of the errorrefsym function.

When was CVE-2021-33983 disclosed?

CVE-2021-33983 was first published in the National Vulnerability Database on February 17, 2023, with the most recent update on March 18, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-33983 actively exploited?

CVE-2021-33983 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 25.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-33983?

CVE-2021-33983 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2021-33983?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-33983, 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-2021-33983

Explore →

Is Your Infrastructure Affected by CVE-2021-33983?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2021-33983

📅 Published

🔄 Last Modified

🔗 References (2)