How severe is CVE-2023-23477?

CVE-2023-23477 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-23477 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-23477?

CVE-2023-23477 primarily affects Ibm Websphere Application Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-23477?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-23477 published?

CVE-2023-23477 was published on 2023-02-03 and last updated on 2026-06-17.

CVE-2023-23477

CVE-2023-23477 is a high-severity vulnerability in Ibm Websphere Application Server with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Ibm Websphere Application Server
Published: 2023-02-03
Last modified: 2026-06-17

Description

IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specially crafted sequence of serialized objects. IBM X-Force ID: 245513.

Frequently asked questions

What is CVE-2023-23477?: IBM WebSphere Application Server 8.5 and 9.0 traditional could allow a remote attacker to execute arbitrary code on the system with a specially crafted sequence of serialized objects. IBM X-Force ID: 245513.
How severe is CVE-2023-23477?: CVE-2023-23477 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-23477 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-23477?: CVE-2023-23477 primarily affects Ibm Websphere Application Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-23477?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-23477 published?: CVE-2023-23477 was published on 2023-02-03 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*

More vulnerabilities in Ibm Websphere Application Server

CVE-2015-1920 — Critical (CVSS 10.0): IBM WebSphere Application Server (WAS) 6.1 through 6.1.0.47, 7.0 before 7.0.0.39, 8.0 before 8.0.0.11, and 8.5 before…
CVE-2013-1777 — Critical (CVSS 10.0): The JMX Remoting functionality in Apache Geronimo 3.x before 3.0.1, as used in IBM WebSphere Application Server (WAS)…
CVE-2013-0462 — Critical (CVSS 10.0): Unspecified vulnerability in IBM WebSphere Application Server (WAS) 6.1, 7.0 before 7.0.0.27, 8.0, and 8.5 has unknown…
CVE-2012-5955 — Critical (CVSS 10.0): Unspecified vulnerability in the IBM HTTP Server component 5.3 in IBM WebSphere Application Server (WAS) for z/OS…
CVE-2011-1377 — Critical (CVSS 10.0): The Web Services Security component in the Web Services Feature Pack before 6.1.0.41 for IBM WebSphere Application…
CVE-2010-3186 — Critical (CVSS 10.0): IBM WebSphere Application Server (WAS) 7.x before 7.0.0.13, and WebSphere Application Server Feature Pack for Web…

All CVEs affecting Ibm Websphere Application Server →

Other CWE-94 (Code Injection) vulnerabilities

CVE-2026-76605 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Remote code execution via image element in Fabrik < 4.7.3 - ???.
CVE-2026-76604 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Unauthenticated remote code execution via PHP form element in Fabrik < 4.7.3 - The…
CVE-2026-67364 — Critical (CVSS 10.0): Joomla Extension - balbooa.com - Pre-auth PHP Code Injection in Balbooa Forms < 2.4.3.2 - CWE-94 / CWE-95 | CVSS 3.1:…
CVE-2026-73343 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in WP Compress < 7.20.01 versions.
CVE-2026-74253 — Critical (CVSS 10.0): Joomla Extension - regularlabs.com - Unauthenticated RCE through unverified reflected user input in Sourcerer < 14.0.0…
CVE-2026-73678 — Critical (CVSS 10.0): MindsDB Minds Platform version 26.1.0 and earlier contains an unauthenticated remote code execution vulnerability that…

Browse all CWE-94 (Code Injection) vulnerabilities →