CVE-2026-86314

MEDIUMPre-NVD 6.26.2—
EchelonGraph scoreHIGH confidence

Score 6.2 from GitHub Security Advisory published 2026-09-07. a secondary CVSS source baseline 6.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.2EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.2Exploit: None knownExposed: 0

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

Integer overflow in the source-bounds check in Memory::init() (src/runtime/Memory.cpp) in Samsung walrus on all platforms allows a remote attacker to cause an out-of-bounds heap read and denial of service via a crafted WebAssembly module in which a 32-bit unsigned addition wraps around and bypasses the bounds check.

This issue affects Walrus: ff3bf5ff5c4878f8e5572c9593d303f6bc997443.

CVSS v3
6.2
EG Score
6.2(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity62% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

September 7, 2026

Last Modified

September 8, 2026

Advisory Details (1)

Auto-updated Sep 7, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
github_pr

Fix wasi 0.2 errors, and update test system

Fix merged in Samsung/walrus PR #482 on 2026-08-21 — awaiting tagged release

https://github.com/Samsung/walrus/pull/482

Vendor Advisories for CVE-2026-86314(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 43× 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. 2026-09-21 06:05 UTCEG score recompute
  2. 2026-09-21 06:05 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 05:28 UTCEG score recompute
  5. 2026-09-20 05:28 UTCGHSA enrichment
  6. 2026-09-19 04:51 UTCEG score recompute
  7. 2026-09-19 04:51 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-18 04:14 UTCEG score recompute
  10. 2026-09-18 04:14 UTCGHSA enrichment
  11. 2026-09-17 19:32 UTCEPSS rescore
  12. 2026-09-17 03:37 UTCEG score recompute
  13. 2026-09-17 03:37 UTCGHSA enrichment
  14. 2026-09-16 14:09 UTCEPSS rescore
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-16 03:00 UTCEG score recompute
  17. 2026-09-16 03:00 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 02:23 UTCGHSA enrichment
  21. 2026-09-14 01:46 UTCEG score recompute
  22. 2026-09-14 01:46 UTCGHSA enrichment
  23. 2026-09-13 01:09 UTCGHSA enrichment
  24. 2026-09-12 00:32 UTCEG score recompute
  25. 2026-09-12 00:32 UTCGHSA enrichment
Show 18 more
  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-10 23:55 UTCEG score recompute
  4. 2026-09-10 23:55 UTCGHSA enrichment
  5. 2026-09-09 23:18 UTCEG score recompute
  6. 2026-09-09 23:18 UTCGHSA enrichment
  7. 2026-09-08 22:01 UTCEPSS rescore
  8. 2026-09-08 19:53 UTCGHSA enrichment
  9. 2026-09-08 16:50 UTCEG score recompute
  10. 2026-09-08 16:49 UTCGHSA enrichment
  11. 2026-09-08 16:03 UTCEG score recompute
  12. 2026-09-08 16:03 UTCGHSA enrichment
  13. 2026-09-08 04:12 UTCEG score recompute
  14. 2026-09-08 04:12 UTCGHSA enrichment
  15. 2026-09-07 03:35 UTCEG score recompute
  16. 2026-09-07 03:35 UTCGHSA enrichment
  17. 2026-09-07 02:42 UTCEG score recompute
  18. 2026-09-07 02:41 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-86314?
CVE-2026-86314 is a medium vulnerability published on September 7, 2026. Integer overflow in the source-bounds check in Memory::init() (src/runtime/Memory.cpp) in Samsung walrus on all platforms allows a remote attacker to cause an out-of-bounds heap read and denial of service via a crafted WebAssembly module in which a 32-bit unsigned addition wraps around and bypasses…
When was CVE-2026-86314 disclosed?
CVE-2026-86314 was first published in the National Vulnerability Database on September 7, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86314 actively exploited?
CVE-2026-86314 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 97.4% of all scored CVEs.
What is the CVSS score of CVE-2026-86314?
CVE-2026-86314 has a CVSS v3 base score of 6.2 (NVD).
How do I remediate CVE-2026-86314?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86314, 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

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