How severe is CVE-2026-47307?

CVE-2026-47307 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-47307 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-47307?

CVE-2026-47307 affects Samsung Walrus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-47307?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-47307 have an EU (EUVD) identifier?

Yes. CVE-2026-47307 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30823.

When was CVE-2026-47307 published?

CVE-2026-47307 was published on 2026-05-19 and last updated on 2026-06-17.

CVE-2026-47307

CVE-2026-47307 is a medium-severity vulnerability in Samsung Walrus with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30823
Weakness: CWE-476
Affected product: Samsung Walrus
Published: 2026-05-19
Last modified: 2026-06-17

Description

NULL pointer dereference vulnerability in Samsung Open Source Walrus allows an attacker to cause a denial of service via a crafted WebAssembly module containing deeply nested instructions. This issue affects Walrus: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9.

Frequently asked questions

What is CVE-2026-47307?: NULL pointer dereference vulnerability in Samsung Open Source Walrus allows an attacker to cause a denial of service via a crafted WebAssembly module containing deeply nested instructions. This issue affects Walrus: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9.
How severe is CVE-2026-47307?: CVE-2026-47307 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-47307 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-47307?: CVE-2026-47307 affects Samsung Walrus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-47307?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-47307 have an EU (EUVD) identifier?: Yes. CVE-2026-47307 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30823.
When was CVE-2026-47307 published?: CVE-2026-47307 was published on 2026-05-19 and last updated on 2026-06-17.

References

https://github.com/Samsung/walrus/pull/409

Affected products (1)

cpe:2.3:a:samsung:walrus:2026-04-27:*:*:*:*:*:*:*

More vulnerabilities in Samsung Walrus

CVE-2026-47308 — Medium (CVSS 5.5): NULL pointer dereference vulnerability in Samsung Open Source Walrus allows Pointer Manipulation. This issue affects…

All CVEs affecting Samsung Walrus →

Other CWE-476 (NULL Pointer Dereference) vulnerabilities

CVE-2022-36648 — Critical (CVSS 10.0): The hardware emulation in the of_dpa_cmd_add_l2_flood of rocker device model in QEMU, as used in 7.0.0 and earlier,…
CVE-2020-14500 — Critical (CVSS 10.0): Secomea GateManager all versions prior to 9.2c, An attacker can send a negative value and overwrite arbitrary data.
CVE-2010-2495 — Critical (CVSS 10.0): The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does…
CVE-2026-46195 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building…
CVE-2026-31657 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: batman-adv: hold claim backbone gateways by…
CVE-2026-31436 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor…

Browse all CWE-476 (NULL Pointer Dereference) vulnerabilities →