CVE-2026-47218

CRITICALPre-NVD 9.39.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (33rd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source

Also known asEUVD-2026-102247 (ENISA EUVD)Source: ENISA EUVD

9.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

runwasi facilitates running Wasm and WASI workloads managed by containerd. Prior to 0.6.1, containerd-shim-wasmtime-v1 can treat Wasmtime precompiled bytes supplied directly in an OCI image layer as a trusted artifact from the precompile-cache path and deserialize them as native code. An attacker who causes a victim to run a crafted image can bypass WebAssembly validation and execute native code in the shim zygote process, gaining the filesystem, environment, credentials, networking, and Linux syscall access available to the workload container. Downstream shims built with runwasi's containerd-shim-wasm precompile-cache API are also affected if they implement Compiler and trust executable precompiled artifacts from OCI image layers; the 0.6.1 boundary applies specifically to containerd-shim-wasmtime and does not independently certify downstream product releases. The flaw escapes the WASI sandbox to the workload container boundary, but it does not by itself bypass container isolation or provide direct host code execution. This issue is fixed in version 0.6.1.

CVSS v3
9.3
EG Score
9.3CRITICALmedium confidence
EG Risk
57
EG Risk 57/100

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)
Severity93% × 45%
Impact severity (EG Severity): CVSS 9.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
33rd
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 (9.3): severity, escalated by confirmed exploitation. This CVE's 9.3 is its impact severity (EG Severity), not escalated.

EG Severity
9.3 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). 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 or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.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 or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)3 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

October 15, 2026

Last Modified

October 16, 2026

Advisory Details (2)

Auto-updated Oct 15, 2026
Patch available. Sources: github, github_commit.
GitHub commit Patch Available

commit d28ab73c2c8a (containerd/runwasi)

Patch available: containerd/runwasi containerd-shimkit/v0.1.2 (contains commit d28ab73c2c8a)

https://github.com/containerd/runwasi/commit/d28ab73c2c8a6c50d1927078821bd418b9e51638
GitHub advisoryMentions a patch (unverified)

Forged Wasmtime precompiled OCI layer bypasses runwasi WASI sandbox · Advisory · containerd/runwasi · GitHub

https://github.com/containerd/runwasi/security/advisories/GHSA-cc25-vq59-rcjx

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× 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.

  1. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-11-01 19:48 UTCEG score recompute
  3. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-10-31 18:32 UTCEG score recompute
  5. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  6. 2026-10-30 17:11 UTCEG score recompute
  7. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  8. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-10-29 15:56 UTCEG score recompute
  10. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  11. 2026-10-28 14:40 UTCEG score recompute
  12. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  13. 2026-10-26 23:08 UTCEG score recompute
  14. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  15. 2026-10-25 18:29 UTCEG score recompute
  16. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  17. 2026-10-25 14:24 UTCEG score recompute
  18. 2026-10-24 17:07 UTCEG score recompute
  19. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  20. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  21. 2026-10-23 15:51 UTCEG score recompute
  22. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  23. 2026-10-22 14:32 UTCEG score recompute
  24. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  25. 2026-10-21 13:16 UTCEG score recompute
Show 14 more
  1. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  2. 2026-10-19 20:56 UTCEG score recompute
  3. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  4. 2026-10-18 18:41 UTCEG score recompute
  5. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  6. 2026-10-18 03:36 UTCEG score recompute
  7. 2026-10-17 17:23 UTCEG score recompute
  8. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  9. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  10. 2026-10-15 20:29 UTCEG score recompute
  11. 2026-10-15 20:06 UTCEG score recompute
  12. 2026-10-15 19:28 UTCEG score recompute
  13. 2026-10-15 18:24 UTCEG score recomputeFirst assessed: 9.3 CRITICAL
  14. 2026-10-15 18:22 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-47218?
CVE-2026-47218 is a critical-severity vulnerability; its CVE record was published on October 15, 2026. runwasi facilitates running Wasm and WASI workloads managed by containerd. Prior to 0.6.1, containerd-shim-wasmtime-v1 can treat Wasmtime precompiled bytes supplied directly in an OCI image layer as a trusted artifact from the precompile-cache path and deserialize them as native code. An attacker…
When was the CVE record for CVE-2026-47218 published?
The CVE record for CVE-2026-47218 was published on October 15, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 16, 2026; the record at its source may have been updated since.
Is CVE-2026-47218 actively exploited?
CVE-2026-47218 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-47218?
CVE-2026-47218 has a CVSS base score of 9.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-47218?
A fix for CVE-2026-47218 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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