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Back to active CVEs
High · CVSS 7.1CVE-2026-110714

libsmb2 through 6.2 Heap Out-of-Bounds Read via decode_acl Integer UnderflowCVE-2026-110714

Answer in brief

CVE-2026-110714 records a High severity (CVSS 7.1) vulnerability in libsmb2 through 6.2 Heap Out-of-Bounds Read via decode_acl Integer Underflow. The current sources do not mark it as known exploited. The current feed maps sahlberg/libsmb2 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 14, 2026Updated Oct 14, 2026Source checked Oct 14, 2026First seen by HOL Oct 14, 2026Material review Oct 14, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps sahlberg/libsmb2 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
sahlberg/libsmb2generic>=0 <=6.2Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for sahlberg/libsmb2.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Oct 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 14, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencehackmd.io
  • Source referencevulncheck.com
Upstream source description

libsmb2 through 6.2 contains an integer underflow vulnerability in decode_acl that allows malicious SMB servers to trigger heap out-of-bounds reads via crafted security descriptors. Attackers controlling a server or intercepting unsigned sessions can send an AclSize below 8 in a QUERY_INFO reply, bypassing ACE bounds checks and crashing the client.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Junos OS: Malformed Extended Echo requests cause a Routing Engine reboot when Extended Echo is enabledAlso CWE-191
  • Account pre-hijacking in the Prowler API through email based social account linking without verificationSame generic ecosystem
  • Zulip: Guests can read new messages in non-subscribed public channelsSame generic ecosystem
  • Junos OS and Junos OS Evolved: A specific BGP FlowSpec update causes an rpd crash when BGP FlowSpec import policy is usedSame generic ecosystem
  • Junos OS and Junos OS Evolved: A BGP peer causes an rpd crash if a malformed MCAST-TREE NLRI is received and readvertisedSame generic ecosystem
  • Junos OS: Unauthorized root command execution when J-Web is enabledSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-191
Source
CVE List V5
Source checked
Oct 14, 2026
References
5 linked sources
Open source record