Is this vulnerability remotely exploitable?

It can be, if a service or application exposes an interface (such as file upload, network protocol, or API) that passes untrusted compressed data into the vulnerable decompression path without prior sanitization or isolation.

What level of access does an attacker need to exploit this issue?

An attacker typically only needs the ability to supply or influence compressed data that the affected ROOT-based component will decompress (for example, sending crafted files or network payloads). No direct code execution or privileged access is required initially.

What is the safest general fix pattern for this vulnerability class?

The most robust pattern is to use hardened, up-to-date decompression libraries with comprehensive bounds checking, remove or refactor unsafe custom fast paths, and ensure all length/index calculations are validated before buffer access. Ideally, high-risk parsing logic is isolated in low-privilege components.

Severity:

CRITICAL RISK

(9.8)

Memory Corruption in zlib Inffast Decompression Path (CWE-787) in ROOT Builtins

CVE-2026-24811

Published:

Jan 27, 2026

Status:

Modified

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Memory Corruption / Out-of-Bounds Access

CWE:

CWE-20;CWE-119;CWE-125;CWE-787

Impact:

Arbitrary Code Execution and Denial of Service

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Memory Corruption / Out-of-Bounds Access

CWE:

CWE-20;CWE-119;CWE-125;CWE-787

Impact:

Arbitrary Code Execution and Denial of Service

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Ask AI for summary of CodeAnt

Memory Corruption in zlib Inffast Decompression Path (CWE-787) in ROOT Builtins

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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