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TI-2026-15269 Aliases CVE-2026-18634GHSA-v8fc-x528-77rr

Deserialization of untrusted data in SonicWall GMS

Priority LOW 38CWE-502Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-502.

Summary

An insecure handling of serialized objects vulnerability was found in the one of the service of GMS application 9.5.1 (Build 9510.1044) and earlier versions. A local attacker with the ability to interact with the service could exploit this behavior to perform unauthorized actions through the affected component.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00341 27th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SonicWallGMS9.5.1 and earlier versions—No fix listedCNA
  • GMS VendorSonicWall Affected 9.5.1 and earlier versions Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    SonicWall GMS — psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0011

    6 records Highest priority Priority MEDIUM 2 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2026-47070 Code injection in SonicWall GMSPriority MEDIUM 52
    • TI-2026-47068 Code injection in SonicWall GMSPriority MEDIUM 48
    • TI-2026-47077 Improper certificate validation in SonicWall GMSPriority LOW 37
    Show all 6 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-18634
  2. 2026-10-03 Alias added: GHSA-v8fc-x528-77rr

References

Advisory 1

  • TI-2026-57684 Server-side request forgery in SonicWall SMA1000 KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-12965 Server-side request forgery in SonicWall SMA1000 KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-16819 Deserialization of untrusted data in SonicWall SMA1000 KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-03356 Stack-based buffer overflow in SonicWall SMA100 KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-03349 SQL injection in SonicWall SRA/SMA100 KEVCVSS 3.1CRITICAL 9.8
See all 283 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences