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VulnerabilityPublished

CVE-2026-47307: Samsung Open Source Walrus · NULL Pointer Dereference

Affects Samsung Open Source WalrusSource CVE Database V5

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Not known to be exploited · CVSS 5.5 Medium.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Samsung Open SourceWalrusAffected
  • =f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9
Fixed in–

AI-suggested

Until a fix is available, avoid processing untrusted or crafted WebAssembly modules with deeply nested instructions in the affected Walrus version. Monitor official Samsung Open Source channels for updates or patches.

Description

CVE-2026-47307 is a NULL pointer dereference vulnerability in Samsung Open Source Walrus. It allows an attacker to cause a denial of service by supplying a crafted WebAssembly module with deeply nested instructions. The vulnerability affects a specific version of Walrus identified by commit f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9. There is no known exploit in the wild and no official patch or remediation guidance has been provided yet. The CVSS score is 5.5, indicating a medium severity impact focused on availability disruption.

References

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