Cyber Posture

CVE-2026-6938

Medium
Microsoft: not affectedMSmacOS: not affectedMacLinux: not affectedLnxMobile: not affectedMobNetwork: not affectedNetApplication: affectedAppOther: not affectedOth

Published: 27 May 2026

Published
27 May 2026
Modified
28 May 2026
KEV Added
—
Patch
—
CVSS Score 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS Score 0.0002 7.1th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-6938 is a medium-severity Improper Authorization (CWE-285) vulnerability in Ibm Db2. Its CVSS base score is 6.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Transfer Data to Cloud Account (T1537); ranked at the 7.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

Threat & Defense at a Glance

What attackers do: exploitation maps to Transfer Data to Cloud Account (T1537).
Threat & Defense Details

Likely Mitigating ControlsAI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AC-1 Policy and Procedures
addresses: CWE-285

Documented procedures facilitate correct implementation and ongoing management of authorization decisions.

AC-13 Supervision and Review — Access Control
addresses: CWE-285

Periodic reviews identify and correct flaws in authorization decisions or enforcement.

AC-14 Permitted Actions Without Identification or Authentication
addresses: CWE-285

The control's documentation requirement reduces improper authorization by ensuring only mission-justified actions bypass authentication.

AC-16 Security and Privacy Attributes
addresses: CWE-285

Establishing permitted attributes and values, plus auditing changes, ensures authorization decisions are based on correctly managed policy data.

AC-17 Remote Access
addresses: CWE-285

Explicitly mandates authorizing remote access types before permitting connections, directly mitigating improper authorization.

AC-18 Wireless Access
addresses: CWE-285

The control explicitly requires authorization of each wireless access type prior to permitting connections.

AC-19 Access Control for Mobile Devices
addresses: CWE-285

Mandating explicit authorization of mobile device connections reduces the risk of improper authorization decisions for system access.

AC-2 Account Management
addresses: CWE-285

Specifying access authorizations for each account and requiring approvals for account requests enforces proper authorization decisions.

MITRE ATT&CK Enterprise TechniquesAI

T1537 Transfer Data to Cloud Account Exfiltration
Adversaries may exfiltrate data by transferring the data, including through sharing/syncing and creating backups of cloud environments, to another cloud account they control on the same service.
attack.mitre.org →
Why these techniques?

Authorization bypass enables unauthorized uploads to remote object storage paths.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1

NVD Description

IBM Db2 12.1.0 through 12.1.4 is vulnerable to authorization bypass when uploading to a remote object storage path with a special query.

Deeper analysisAI

Automated synthesis unavailable for this CVE.

Details

CWE(s)
CWE-285
OWASP Top 10 Web 2025
A01:2025

Affected Products

ibm
db2
12.1.0 — 12.1.4

EU & UK References

References