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UK Cyber Defence
VulnerabilityModified

CVE-2022-23307

CVE-2020-9493 identified a deserialization issue that was present in Apache Chainsaw.

HIGH 8.8EPSS 54.4%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 54.4%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

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.

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
54.41% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-502
Affected
apache/chainsaw · apache/log4j · qos/reload4j · oracle/advanced supply chain planning · oracle/business intelligence · oracle/business process management suite · oracle/communications eagle ftp table base retrieval · oracle/communications instant messaging server · oracle/communications messaging server · oracle/communications network integrity · oracle/communications offline mediation controller · oracle/communications unified inventory management · oracle/e-business suite cloud manager and cloud backup module · oracle/enterprise manager base platform · oracle/financial services revenue management and billing analytics · oracle/healthcare foundation · oracle/hyperion data relationship management · oracle/hyperion infrastructure technology · oracle/identity management suite · oracle/identity manager connector · +6 more
Source
security@apache.org
EPSS trend
0%28%55%3 November 2026: 54.41%3 November 20263 November 2026

EPSS 54.4% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.