CVE-2023-30633

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2023-10-19. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

An issue was discovered in TrEEConfigDriver in Insyde InsydeH2O with kernel 5.0 through 5.5. It can report false TPM PCR values, and thus mask malware activity. Devices use Platform Configuration Registers (PCRs) to record information about device and software configuration to ensure that the boot process is secure. (For example, Windows uses these PCR measurements to determine device health.) A vulnerable device can masquerade as a healthy device by extending arbitrary values into Platform Configuration Register (PCR) banks. This requires physical access to a target victim's device, or compromise of user credentials for a device. This issue is similar to CVE-2021-42299 (on Surface Pro devices).

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

October 19, 2023

Last Modified

November 21, 2024

References (4)

Data Freshness Timeline

(refreshed 8× 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 130 total refreshes for this CVE.

  1. 2026-08-09 13:44 UTCEPSS rescore
  2. 2026-08-08 16:34 UTCEPSS rescore
  3. 2026-08-07 16:24 UTCEPSS rescore
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  1. 2026-07-23 14:16 UTCEPSS rescore
  2. 2026-07-23 02:21 UTCEG score recompute
  3. 2026-07-22 23:09 UTCEG score recompute
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  27. 2026-07-09 19:08 UTCEPSS rescore
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  69. 2026-06-11 13:59 UTCEPSS rescore
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  73. 2026-06-08 14:15 UTCEPSS rescore
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  75. 2026-06-07 15:23 UTCEPSS rescore

Frequently asked(5)

What is CVE-2023-30633?
CVE-2023-30633 is a medium vulnerability published on October 19, 2023. An issue was discovered in TrEEConfigDriver in Insyde InsydeH2O with kernel 5.0 through 5.5. It can report false TPM PCR values, and thus mask malware activity. Devices use Platform Configuration Registers (PCRs) to record information about device and software configuration to ensure that the boot…
When was CVE-2023-30633 disclosed?
CVE-2023-30633 was first published in the National Vulnerability Database on October 19, 2023, 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-2023-30633 actively exploited?
CVE-2023-30633 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 88.4% of all scored CVEs.
What is the CVSS score of CVE-2023-30633?
CVE-2023-30633 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2023-30633?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-30633, 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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