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CVE-2026-109445 PLANET GS-5220-8P2T2S Stack Buffer Overflow via webstax_auth Cookie

9.3 critical

Critical (9.3) in planet technology corp. planet gs-5220-8p2t2s.

On this page
PLANET GS-5220-8P2T2S (hardware version 3.0) firmware versions before 3.2412b261008 contains a stack-based buffer overflow vulnerability that allows unauthenticated attackers to corrupt stack memory by submitting an oversized webstax_auth HTTP Cookie value that is copied into a fixed-size stack buffer without length validation. Attackers can send a crafted unauthenticated HTTP request with an oversized cookie to overwrite the saved return address and corrupt stack memory, leading to memory corruption and potential denial of service on the device.

Severity

CVSS 4.0

9.3 critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-121 Stack-based Buffer Overflow
Published
Assigned by
VulnCheck (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

  • planet technology corp.:planet gs-5220-8p2t2s

Versions

From the CNA's record in the CVE List.

ProductAffected
PLANET Technology Corp. PLANET GS-5220-8P2T2Sbefore 3.2412b261008

References

Check your stackJSON