VYPR
Unrated severityNVD Advisory· Published Oct 24, 2022· Updated May 7, 2025

spx_restservice Login_handler_func Subfunction Stack-Based Buffer Overflow

CVE-2021-26730

Description

A stack-based buffer overflow vulnerability in a subfunction of the Login_handler_func function of spx_restservice allows an attacker to execute arbitrary code with the same privileges as the server user (root). This issue affects: Lanner Inc IAC-AST2500A standard firmware version 1.10.0.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

A stack-based buffer overflow in Lanner IAC-AST2500A firmware allows unauthenticated remote code execution as root on the BMC, compromising the managed host.

Vulnerability

A stack-based buffer overflow vulnerability in a subfunction of the Login_handler_func function of spx_restservice allows an attacker to execute arbitrary code with the same privileges as the server user (root). This affects Lanner Inc IAC-AST2500A standard firmware version 1.10.0. [1][2]

Exploitation

An unauthenticated remote attacker can trigger the overflow by sending a specially crafted request to the service. No authentication or user interaction is required. [2]

Impact

Successful exploitation results in arbitrary code execution with root privileges on the BMC, potentially allowing the attacker to compromise the managed host. [2]

Mitigation

Updated BMC firmware versions that fix the issue are available from Lanner technical support. [2]

AI Insight generated on May 25, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.

Affected products

2

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

2

News mentions

0

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