Is CVE-2026-23303 in the CISA KEV catalog?

No. CVE-2026-23303 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-23303?

CVE-2026-23303 has a CVSS v3 base score of 5.5 (Moderate).

What is the EPSS score for CVE-2026-23303?

CVE-2026-23303 has an EPSS score of 0.12% (2th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-23303?

Upgrade linux on debian 11 to 5.10.257-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-23303

MEDIUM

5.5

CVSS v3

NVD

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.

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.257-1CVE-2026-23303

Fixed in:6.1.170-1CVE-2026-23303

Fixed in:6.12.85-1CVE-2026-23303

Fixed in:6.19.8-1CVE-2026-23303

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.12%probability of exploitation in 30 days

2ndpercentile

Low risk: more likely to be exploited than 2% of all known CVEs.

References

Patch8

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-28.