Is this vulnerability remotely exploitable?

It can be, depending on how the application exposes `persist_dir`. If an attacker can cause the application to load an index from a directory they control (for example, via uploads, shared storage, or configurable paths), they may be able to exploit it remotely. If `persist_dir` is strictly local and not influenced by external users, the risk is reduced.

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

The attacker must be able to create or modify `multi_embed_store.pkl` inside a directory that the victim later passes to `BGEM3Index.load_from_disk()`. This access might be direct filesystem access, write access to shared volumes, or indirect control through an application feature that writes files into the persist directory.

What is the safest general fix pattern?

Replace `pickle`-based deserialization with a safer, non-code-executing format and ensure that only strictly validated, schema-constrained data is loaded. In addition, treat any persisted index directory as trusted-only data, blocking untrusted users from writing into it.

Severity:

HIGH RISK

(7.8)

Unsafe Pickle Deserialization (CWE-502) in LlamaIndex BGEM3Index.load_from_disk

CVE-2024-14021

Published:

Jan 12, 2026

Status:

Analyzed

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:

Unsafe Deserialization

CWE:

CWE-502

Impact:

Remote Code Execution

Severity:

HIGH RISK

(7.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Unsafe Deserialization

CWE:

CWE-502

Impact:

Remote Code Execution

Severity:

HIGH RISK

(7.8)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Unsafe Pickle Deserialization (CWE-502) in LlamaIndex BGEM3Index.load_from_disk

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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