CVE-2026-40951: Memory corruption in Secure Access Windows clients prior to 14.50

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• absolute secure accessbefore 14.50

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Absolute). Independent of NVD's CPE analysis and usually ahead of it.

• Absolute Software Secure Access

  • before 14.50affected

Other highest-scoring records for the same primary product.

• CVE-2026-55402CVE-2026-55402 is an out of bounds read vulnerability in Secure Access servers prior to version 14.57.
  34Monitor
• CVE-2026-33445Memory management vulnerability in Secure Access servers
  34Monitor
• CVE-2026-40952Privilge misconfiguration in Secure Access installers
  34Monitor

Published before and after this one in the same product

• ← EarlierCVE-2026-40949Apr 30, 2026 · Buffer overflow in Windows clients prior to 14.50
  27Monitor
• ← EarlierCVE-2026-40950Apr 30, 2026 · Buffer overflow in the Secure Access server prior to 14.50
  28Monitor
• Later →CVE-2026-33443Jul 15, 2026 · Memory management error in Secure Access servers prior to 14.55
  28Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1function expand(node) {2  return node.children.map(expand);3}

1const MAX_DEPTH = 32;2function expand(node, depth = 0) {3  if (depth > MAX_DEPTH) throw new Error("too deep");4  return node.children.map((c) => expand(c, depth + 1));5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.