CVE-2021-33035

HIGHNVD 7.88.2▲
EchelonGraph scoreHIGH confidence

Score elevated to 8.2 because EPSS predicts 51% probability of exploitation within the next 30 days (top 1.2% of all CVEs). NVD baseline CVSS 7.8 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, nvd
Trending — 3 sources updated this weekElevated
7.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 51%
CISA-KEV: Not listedEPSS: 51%CVSS: 7.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Apache OpenOffice opens dBase/DBF documents and shows the contents as spreadsheets. DBF are database files with data organized in fields. When reading DBF data the size of certain fields is not checked: the data is just copied into local variables. A carefully crafted document could overflow the allocated space, leading to the execution of arbitrary code by altering the contents of the program stack. This issue affects Apache OpenOffice up to and including version 4.1.10

CVSS v3
7.8
EG Score
8.2(high)
EG Risk
62(Track)
EG Risk 62/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity82% × 45%
Exploitation51% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
98.8%
KEV
Not listed

Published

September 23, 2021

Last Modified

November 21, 2024

References (8)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 33× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 02:01 UTCEG score recompute▲ 0.40
  2. 2026-07-22 22:48 UTCEG score recompute
  3. 2026-07-22 14:06 UTCEPSS rescore
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  10. 2026-07-18 11:29 UTCOSV refresh
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  25. 2026-06-30 13:00 UTCOSV refresh
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  1. 2026-06-29 14:04 UTCEPSS rescore
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  25. 2026-06-12 21:10 UTCOSV refresh
  26. 2026-06-11 13:58 UTCEPSS rescore
  27. 2026-06-10 22:16 UTCEPSS rescore
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  49. 2026-05-29 13:42 UTCEPSS rescore
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  53. 2026-05-27 13:39 UTCEPSS rescore
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  56. 2026-05-26 13:42 UTCEPSS rescore
  57. 2026-05-26 10:01 UTCEG score recompute
  58. 2026-05-26 10:01 UTCGHSA enrichment
  59. 2026-05-26 07:17 UTCEPSS rescore
  60. 2026-05-26 07:17 UTCEPSS rescore
  61. 2026-05-26 07:17 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-33035?
CVE-2021-33035 is a high vulnerability published on September 23, 2021. Apache OpenOffice opens dBase/DBF documents and shows the contents as spreadsheets. DBF are database files with data organized in fields. When reading DBF data the size of certain fields is not checked: the data is just copied into local variables. A carefully crafted document could overflow the…
When was CVE-2021-33035 disclosed?
CVE-2021-33035 was first published in the National Vulnerability Database on September 23, 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-2021-33035 actively exploited?
CVE-2021-33035 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-33035?
CVE-2021-33035 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.2.
How do I remediate CVE-2021-33035?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-33035, 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.

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