How severe is CVE-2026-82340?

CVE-2026-82340 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-82340 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-82340?

CVE-2026-82340 affects Ibm Guardium Data Protection. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-82340?

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

When was CVE-2026-82340 published?

CVE-2026-82340 was published on 2026-09-18 and last updated on 2026-10-06.

CVE-2026-82340

CVE-2026-82340 is a critical-severity vulnerability in Ibm Guardium Data Protection with a CVSS 3.x base score of 9.8. 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: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Ibm Guardium Data Protection
Published: 2026-09-18
Last modified: 2026-10-06

Description

IBM Guardium Data Protection 12.2 is vulnerable to unauthenticated insecure deserialization and attacker-controlled reflective method dispatch in the Change Audit System (CAS) listener. A network attacker able to reach TCP port 16017 may submit crafted serialized messages and potentially cause unintended code execution in the Guardium appliance.

Frequently asked questions

What is CVE-2026-82340?: IBM Guardium Data Protection 12.2 is vulnerable to unauthenticated insecure deserialization and attacker-controlled reflective method dispatch in the Change Audit System (CAS) listener. A network attacker able to reach TCP port 16017 may submit crafted serialized messages and potentially cause unintended code execution in the Guardium appliance.
How severe is CVE-2026-82340?: CVE-2026-82340 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-82340 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-82340?: CVE-2026-82340 affects Ibm Guardium Data Protection. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-82340?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-82340 published?: CVE-2026-82340 was published on 2026-09-18 and last updated on 2026-10-06.

References

https://www.ibm.com/support/pages/node/7288040

Affected products (1)

cpe:2.3:a:ibm:guardium_data_protection:12.2:*:*:*:*:*:*:*

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