5.5

CVE-2026-23303: smb: client: Don't log plaintext credentials in cifs_set_cifscreds

Modified
AliasesUBUNTU-CVE-2026-23303DEBIAN-CVE-2026-23303
Published 25-03-2026Last modified 15-10-2026

Vulnerability summary

CVE-2026-23303 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.13%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 41 · Related 39
MGASA-2026-0097MGASA-2026-0098OPENSUSE-SU-2026:20965-1SUSE-SU-2026:22099-1SUSE-SU-2026:22108-1SUSE-SU-2026:22112-1

Timeline

  1. 25-03-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.12% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 8a8798a5ff90977d6459ce1d657cf8fe13a51e97, < e5a3b11e07b335006371915b2da47b6056c9e3bc | ≥ 8a8798a5ff90977d6459ce1d657cf8fe13a51e97, < 54c570de9a35860dfa85fe668f23ddfda8cc7e26 | ≥ 8a8798a5ff90977d6459ce1d657cf8fe13a51e97, < ff0ece8ed04180c52167c003362284b23cf54e8d | ≥ 8a8798a5ff90977d6459ce1d657cf8fe13a51e97, < 3990f352bb0adc8688d0949a9c13e3110570eb61 | ≥ 8a8798a5ff90977d6459ce1d657cf8fe13a51e97, < b746a357abfb8fdb0a171d51ec5091e786d34be1 | ≥ 8a8798a5ff90977d6459ce1d657cf8fe13a51e97, < 2ef0fc3bf49db2b9df36d5f44508c9e384bfa2a1 | ≥ 8a8798a5ff90977d6459ce1d657cf8fe13a51e97, < 3e182701db612ddd794ccd5ed822e6cc1db2b972 | ≥ 8a8798a5ff90977d6459ce1d657cf8fe13a51e97, < 2f37dc436d4e61ff7ae0b0353cf91b8c10396e4d | 3.3
  • linux_kernel≥ 3.3.1, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.167 | ≥ 6.2, < 6.6.130 | ≥ 6.7, < 6.12.77 | ≥ 6.13, < 6.18.17 | ≥ 6.19, < 6.19.7 | 3.3 | 3.3:rc2 | 3.3:rc3 | 3.3:rc4 | 3.3:rc5 | 3.3:rc6 | 3.3:rc7 | 7.0:rc1
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.8-1

3 vendors · 160 products

References

41 links
Show all 41 references