Micro-Star International Z-series motherboards (Z590, Z490, and Z790) and B-series motherboards (B760, B560, B660, and B460) with firmware 7D25v14, 7D25v17 to 7D25v19, and 7D25v1A to 7D25v1H was discovered to contain a write-what-where condition in the in the SW handler for SMI 0xE3. Motherboard's with the following chipsets are affected: Intel 300, Intel 400, Intel 500, Intel 600, Intel 700, AMD 300, AMD 400, AMD 500, AMD 600 and AMD 700.
CVE-2024-36877
“—” beside the score: it is equal to NVD's CVSS score.
Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2024-08-12. NVD baseline CVSS 8.2; sources differ by 0.0.
Also known asEUVD-2024-36231 (ENISA EUVD) · GHSA-7j43-4jvq-vg4w (GitHub Security Advisories)Source: ENISA EUVD
- Public exploit or proof-of-concept code is available
No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.
- CVSS v3
- 8.2
- EG Score
- 8.2HIGHmedium confidence
- EG Risk
- 53EG Risk 53/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity82% × 45%Impact severity (EG Severity): CVSS 8.2 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: No fix is confirmed yet. Check with the vendor for a fixed release; until one is applied, restrict network exposure of the affected system on your normal schedule at low or medium mission impact and sooner than that at high. - EPSS PROB
- 0.7%
- EPSS %ILE
- 52nd
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (8.2): severity, escalated by confirmed exploitation. This CVE's 8.2 is its impact severity (EG Severity), not escalated.
- EG Severity
- 8.2 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 0.7% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.
No fix is confirmed yet. Check with the vendor for a fixed release; until one is applied, restrict network exposure of the affected system on your normal schedule at low or medium mission impact and sooner than that at high.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
August 12, 2024
Last Modified
April 15, 2026
Advisory Details (1)
Auto-updated Sep 8, 2026At Home In Your Firmware: Analysis of CVE-2024-36877
https://jjensn.com/at-home-in-your-firmware/Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 39× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 96 of 221 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 4 repeat rows among the latest 100 are merged into the row they repeat. The 125 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-02 16:41 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-11-01 16:31 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-30 16:32 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-29 16:30 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-28 16:29 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-28 05:28 UTCEG score recompute
- 2026-10-28 05:28 UTCGHSA enrichmentGHSA-7j43-4jvq-vg4w · GitHub severity HIGH · GitHub CVSS 8.2
- 2026-10-27 16:29 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-26 16:29 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-25 17:08 UTCEG score recompute
- 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
- 2026-10-24 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-23 16:29 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-22 16:31 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-21 16:29 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-20 19:46 UTCEG score recompute
- 2026-10-20 19:46 UTCGHSA enrichmentGHSA-7j43-4jvq-vg4w · GitHub severity HIGH · GitHub CVSS 8.2
- 2026-10-20 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-19 16:29 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-18 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-18 07:12 UTCEG score recompute
- 2026-10-17 16:31 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-16 16:36 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-15 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
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- 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-13 16:30 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-12 17:52 UTCEG score recompute
- 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-11 21:16 UTCEG score recompute
- 2026-10-11 16:09 UTCEG score recompute
- 2026-10-11 13:46 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-10-08 17:07 UTCEPSS rescoreEPSS 0.7% · 50th percentile
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- 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.7% · 50th percentile
- 2026-09-30 19:47 UTCEG score recompute
- 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.7% · 50th percentile
- 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.7% · 50th percentile
- 2026-09-28 13:49 UTCEPSS rescoreEPSS 0.7% · 50th percentile
- 2026-09-27 13:44 UTCEPSS rescoreEPSS 0.7% · 50th percentile
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- 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-09-22 14:46 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-09-21 20:32 UTCEPSS rescoreEPSS 0.7% · 50th percentile
- 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-09-19 15:40 UTCEPSS rescoreEPSS 0.7% · 51st percentile
- 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.7% · 50th percentile
- 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.7% · 50th percentile
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- 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.7% · 50th percentile
- 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.7% · 50th percentile
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- 2026-09-07 15:59 UTCEPSS rescoreEPSS 0.7% · 50th percentile
- 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.7% · 50th percentile
- 2026-09-05 15:26 UTCEPSS rescoreEPSS 0.7% · 49th percentile
- 2026-09-04 13:59 UTCEPSS rescoreEPSS 0.7% · 50th percentile
- 2026-09-04 05:05 UTCEPSS rescoreEPSS 0.7% · 50th percentile
- 2026-09-02 14:10 UTCEPSS rescoreEPSS 0.7% · 50th percentile
- 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.7% · 49th percentile
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- 2026-08-30 19:15 UTCEPSS rescoreEPSS 0.7% · 49th percentile
- 2026-08-30 01:20 UTCEPSS rescoreEPSS 0.7% · 49th percentile
- 2026-08-28 21:39 UTCEPSS rescoreEPSS 0.7% · 49th percentile
- 2026-08-27 14:23 UTCEPSS rescoreEPSS 0.7% · 49th percentile
- 2026-08-26 14:44 UTCEPSS rescoreEPSS 0.7% · 49th percentile
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- 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.7% · 49th percentile
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- 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.7% · 49th percentile
- 2026-08-19 17:02 UTCEPSS rescoreEPSS 0.7% · 49th percentile
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- 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.7% · 49th percentile
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- 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.7% · 49th percentile
- 2026-08-12 13:49 UTCEPSS rescoreEPSS 0.7% · 49th percentile
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- 2026-08-10 23:58 UTCEPSS rescoreEPSS 0.7% · 49th percentile
- 2026-08-09 13:45 UTCEPSS rescoreEPSS 0.7% · 49th percentile
- 2026-08-08 16:35 UTCEPSS rescoreEPSS 0.7% · 49th percentile
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- 2026-08-06 13:45 UTCEPSS rescoreEPSS 0.7% · 49th percentile
- 2026-08-05 19:16 UTCEPSS rescoreEPSS 0.7% · 48th percentile
- 2026-08-04 15:08 UTCEPSS rescoreEPSS 0.7% · 48th percentile
Publicly available exploits
(1 reference)Public exploit code is referenced for this CVE (1 GitHub PoC). No fix is confirmed yet, so defenders should restrict or isolate affected systems accordingly until one is published.
- GitHub PoCjjensn/CVE-2024-36877Published Aug 9, 2024
Exploit POC for CVE-2024-36877
Open source ↗
Related CVEs(same CWE)
Frequently asked(5)
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Dependency Blast Radius
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