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Vulnerabilities

Vulnerability · CVE-2026-110712

libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNam

Published Oct 14, 2026 · catalog updated Oct 17, 2026 · libsmb2 through 6.2 contains

Check if you run it

No confirmed exploitation is on record for CVE-2026-110712. EPSS is 0.45%. Act only if a listed version of libsmb2 through 6.2 contains is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (libsmb2 through 6.2 contains).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.45%
Remediation
Advisory link
Affected products
Debian:13 libsmb2 · Debian:14 libsmb2

libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNameLength. Attackers controlling the server or performing man-in-the-middle on unsigned sessions can return crafted FileAllInformation replies to smb2_stat or smb2_fstat calls, crashing the client.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:13 libsmb26.2+dfsg-2, 6.2+dfsg-2+deb13u1, 6.2+dfsg-3
  • Debian:14 libsmb26.2+dfsg-2, 6.2+dfsg-3, 6.2+dfsg-4

How to fix CVE-2026-110712

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-110712. EPSS is 0.45%. Act only if a listed version of libsmb2 through 6.2 contains is installed.

Which versions are affected?

Compare what you have installed with 6.2+dfsg-2, 6.2+dfsg-2+deb13u1, 6.2+dfsg-3, 6.2+dfsg-2, 6.2+dfsg-3, 6.2+dfsg-4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-125: Out-of-bounds Read. EPSS 0.45%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 14, 2026 · NIST NVD

    Detected

    libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNameLength. Attackers controlling the server or performing man-in-the-middle on unsigned sessions can return crafted FileAllInformation replies to smb2_stat or smb2_fstat calls, crashing the client.

  2. Oct 14, 2026 · NIST NVD

    Updated

    libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNameLength. Attackers controlling the server or performing man-in-the-middle on unsigned sessions can return crafted FileAllInformation replies to smb2_stat or smb2_fstat calls, crashing the client.

  3. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNameLength. Attackers controlling the server or performing man-in-the-middle on unsigned sessions can return crafted FileAllInformation replies to smb2_stat or smb2_fstat calls, crashing the client.

Sources

  • CVE.orgVulnerability recordCVE-2026-110712

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-110712

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-110712

    libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNameLength. Attackers controlling the server or performing man-in-the-middle on unsigned sessions can r

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-110712
    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.