CVE-2021-44703

HIGHNVD 7.88.4▲
EchelonGraph scoreHIGH confidence

Score elevated to 8.4 because EPSS predicts 57% probability of exploitation within the next 30 days (top 1.0% of all CVEs). NVD baseline CVSS 7.8 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, nvd
Elevated
7.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 57%
CISA-KEV: Not listedEPSS: 57%CVSS: 7.8Exploit: NoneExposed: 0

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

Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by a stack buffer overflow vulnerability due to insecure handling of a crafted file, potentially resulting in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

CVSS v3
7.8
EG Score
8.4(high)
EG Risk
65(Track)
EG Risk 65/100SSVC: 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
Severity84% × 45%
Exploitation57% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
99.0%
KEV
Not listed

Published

January 14, 2022

Last Modified

November 21, 2024

References (2)

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 34× 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 02:05 UTCEG score recompute▲ 0.60
  2. 2026-07-22 22:52 UTCEG score recompute
  3. 2026-07-22 14:06 UTCEPSS rescore
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  60. 2026-05-26 04:45 UTCEG score recompute
  61. 2026-05-26 04:45 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2021-44703?
CVE-2021-44703 is a high vulnerability published on January 14, 2022. Acrobat Reader DC version 21.007.20099 (and earlier), 20.004.30017 (and earlier) and 17.011.30204 (and earlier) are affected by a stack buffer overflow vulnerability due to insecure handling of a crafted file, potentially resulting in arbitrary code execution in the context of the current user.…
When was CVE-2021-44703 disclosed?
CVE-2021-44703 was first published in the National Vulnerability Database on January 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-2021-44703 actively exploited?
CVE-2021-44703 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-44703?
CVE-2021-44703 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.4.
How do I remediate CVE-2021-44703?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-44703, 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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