CVE-2021-40352

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 10%CVSS: 6.5Exploit: NoneExposed: 0

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

OpenEMR 6.0.0 has a pnotes_print.php?noteid= Insecure Direct Object Reference vulnerability via which an attacker can read the messages of all users.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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
Severity65% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
95.0%
KEV
Not listed

Published

September 1, 2021

Last Modified

November 21, 2024

References (6)

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 48× 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.

Showing the most recent 100 of 104 total refreshes for this CVE.

  1. 2026-07-23 02:04 UTCEG score recompute
  2. 2026-07-22 22:50 UTCEG score recompute
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  75. 2026-05-26 11:12 UTCEG score recompute

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 GitHub PoC) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-50260
    First seen Sep 6, 2021

    OpenEMR 6.0.0 - 'noteid' Insecure Direct Object Reference (IDOR)

    Open source ↗
  • GitHub PoCallenenosh/CVE-2021-40352
    First seen Sep 1, 2021
    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-40352?
CVE-2021-40352 is a medium vulnerability published on September 1, 2021. OpenEMR 6.0.0 has a pnotes_print.php?noteid= Insecure Direct Object Reference vulnerability via which an attacker can read the messages of all users.
When was CVE-2021-40352 disclosed?
CVE-2021-40352 was first published in the National Vulnerability Database on September 1, 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-2021-40352 actively exploited?
CVE-2021-40352 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 95.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-40352?
CVE-2021-40352 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2021-40352?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-40352, 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

Explore the affected products and dependency analysis for CVE-2021-40352

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