CVE-2022-23307CWE-502

A deserialization flaw in the Chainsaw component of Log4j 1 can lead to malicious code execution.

High · published January 18, 2022

Patch now

High probability of exploitation

CVSS calls it high at 8.8. It sits in the 99.0th percentile for exploit probability.

CVSS v3.1

8.8

EPSS

54%

Percentile

99.0

In the wild

Unconfirmed

What it is

CVE-2020-9493 identified a deserialization issue that was present in Apache Chainsaw. Prior to Chainsaw V2.0 Chainsaw was a component of Apache Log4j 1.2.x where the same issue exists.

The record

Technical detail

CVSS v3.1: 8.8 · HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0: Not supplied
EPSS: 0.54411 · 99.0th percentile
Weakness: CWE-502 · Deserialization of Untrusted Data
Published: 2022-01-18T15:25Z

EPSS history

Timeline

18 JAN 15:25Z
A deserialization flaw in the Chainsaw component of Log4j 1 can lead to malicious code execution.
cvelistv5