How severe is CVE-2026-81657?

CVE-2026-81657 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-2026-81657 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-81657?

CVE-2026-81657 affects Ibm Guardium Data Protection. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-81657?

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-2026-81657 published?

CVE-2026-81657 was published on 2026-09-18 and last updated on 2026-10-06.

CVE-2026-81657

CVE-2026-81657 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Ibm Guardium Data Protection
Published: 2026-09-18
Last modified: 2026-10-06

Description

IBM Guardium Data Protection 12.2 could allow a remote unauthenticated attacker to execute arbitrary code on the system due to the deserialization of untrusted data.

Frequently asked questions

What is CVE-2026-81657?: IBM Guardium Data Protection 12.2 could allow a remote unauthenticated attacker to execute arbitrary code on the system due to the deserialization of untrusted data.
How severe is CVE-2026-81657?: CVE-2026-81657 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-2026-81657 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-81657?: CVE-2026-81657 affects Ibm Guardium Data Protection. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-81657?: 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-2026-81657 published?: CVE-2026-81657 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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