How severe is CVE-2026-23655?

CVE-2026-23655 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-23655 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-2026-23655?

CVE-2026-23655 affects Microsoft Confidential Sidecar Containers. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23655?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-23655 have an EU (EUVD) identifier?

Yes. CVE-2026-23655 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7346.

When was CVE-2026-23655 published?

CVE-2026-23655 was published on 2026-02-10 and last updated on 2026-06-17.

CVE-2026-23655

CVE-2026-23655 is a medium-severity vulnerability in Microsoft Confidential Sidecar Containers with a CVSS 3.x base score of 6.5. 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-312.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7346
Weakness: CWE-312
Affected product: Microsoft Confidential Sidecar Containers
Published: 2026-02-10
Last modified: 2026-06-17

Description

Cleartext storage of sensitive information in Azure Compute Gallery allows an authorized attacker to disclose information over a network.

Frequently asked questions

What is CVE-2026-23655?: Cleartext storage of sensitive information in Azure Compute Gallery allows an authorized attacker to disclose information over a network.
How severe is CVE-2026-23655?: CVE-2026-23655 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-23655 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-2026-23655?: CVE-2026-23655 affects Microsoft Confidential Sidecar Containers. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23655?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-23655 have an EU (EUVD) identifier?: Yes. CVE-2026-23655 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7346.
When was CVE-2026-23655 published?: CVE-2026-23655 was published on 2026-02-10 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23655

Affected products (1)

cpe:2.3:a:microsoft:confidential_sidecar_containers:*:*:*:*:*:*:*:*

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