How severe is CVE-2026-86093?

CVE-2026-86093 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-86093 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-86093?

CVE-2026-86093 affects Ibm Db2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-86093?

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-2026-86093 published?

CVE-2026-86093 was published on 2026-09-10 and last updated on 2026-09-14.

CVE-2026-86093

CVE-2026-86093 is a high-severity vulnerability in Ibm Db2 with a CVSS 3.x base score of 7.5. 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-121.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-121
Affected product: Ibm Db2
Published: 2026-09-10
Last modified: 2026-09-14

Description

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands on Db2 clients due to a stack-based buffer overflow that improperly copies user-controlled data into a fixed-size stack buffer without bounds checking.

Frequently asked questions

What is CVE-2026-86093?: IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands on Db2 clients due to a stack-based buffer overflow that improperly copies user-controlled data into a fixed-size stack buffer without bounds checking.
How severe is CVE-2026-86093?: CVE-2026-86093 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-86093 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-86093?: CVE-2026-86093 affects Ibm Db2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-86093?: 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-2026-86093 published?: CVE-2026-86093 was published on 2026-09-10 and last updated on 2026-09-14.

References

https://www.ibm.com/support/pages/node/7286993

Affected products (1)

cpe:2.3:a:ibm:db2:*:*:*:*:*:*:*:*

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