How severe is CVE-2026-23303?

CVE-2026-23303 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-23303 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23303?

CVE-2026-23303 primarily affects Linux Linux Kernel. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-23303?

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

Does CVE-2026-23303 have an EU (EUVD) identifier?

Yes. CVE-2026-23303 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15240.

When was CVE-2026-23303 published?

CVE-2026-23303 was published on 2026-03-25 and last updated on 2026-06-17.

CVE-2026-23303

CVE-2026-23303 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-15240
Affected product: Linux Linux Kernel
Published: 2026-03-25
Last modified: 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: Don't log plaintext credentials in cifs_set_cifscreds When debug logging is enabled, cifs_set_cifscreds() logs the key payload and exposes the plaintext username and password. Remove the debug log to avoid exposing credentials.

Frequently asked questions

What is CVE-2026-23303?: In the Linux kernel, the following vulnerability has been resolved: smb: client: Don't log plaintext credentials in cifs_set_cifscreds When debug logging is enabled, cifs_set_cifscreds() logs the key payload and exposes the plaintext username and password. Remove the debug log to avoid exposing credentials.
How severe is CVE-2026-23303?: CVE-2026-23303 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-23303 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23303?: CVE-2026-23303 primarily affects Linux Linux Kernel. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-23303?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-23303 have an EU (EUVD) identifier?: Yes. CVE-2026-23303 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15240.
When was CVE-2026-23303 published?: CVE-2026-23303 was published on 2026-03-25 and last updated on 2026-06-17.

References

Affected products (9)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.3:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.3:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.3:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.3:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.3:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.3:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.3:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*

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