CVE-2026-40951— Memory corruption in Secure Access Windows clients prior to 14.50
Quick assessment
Affected
Absolute Software Secure Access
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Absolute Secure Access Windows client是Absolute公司的一款安全访问控制的客户端。 Absolute Secure Access Windows client 14.50之前版本存在资源管理错误漏洞，该漏洞源于内存损坏，可能导致本地攻击者通过向API发送畸形数据触发拒绝服务。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1499 · Endpoint Denial of ServiceAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Absolute Software | Secure Access | < 14.50 |
affected |
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I. Basic Information for CVE-2026-40951
Vulnerability Information
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Vulnerability Title
Memory corruption in Secure Access Windows clients prior to 14.50
Source: CVE Program / CVE List V5
Vulnerability Description
CVE-2026-40951 is a memory corruption vulnerability on Secure Access
Windows clients prior to 14.50. Attackers with local control of the
Windows client can send malformed data to an API and trigger a denial of
service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Absolute Secure Access Windows client 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Absolute Secure Access Windows client是Absolute公司的一款安全访问控制的客户端。 Absolute Secure Access Windows client 14.50之前版本存在资源管理错误漏洞，该漏洞源于内存损坏，可能导致本地攻击者通过向API发送畸形数据触发拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Absolute Software | Secure Access | 0 ~ 14.50 | - |
|
II. Public POCs for CVE-2026-40951
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-40951 (1)
Same Patch Batch · Absolute Software · 2026-04-30 · 10 CVEs total
| CVE-2026-33447 | Absolute Secure Access 安全漏洞 | |
| CVE-2026-33446 | Buffer overflow in client authentication prior to version 14.50 | |
| CVE-2026-33448 | Format string vulnerability in MacOS clients prior to 14.50 | |
| CVE-2026-40949 | Buffer overflow in Windows clients prior to 14.50 | |
| CVE-2026-33451 | Arbitrary read/write vulnerability in Windows clients prior to 14.50 | |
| CVE-2026-33449 | Message handler buffer overflow in clients prior to 14.50 | |
| CVE-2026-33450 | Out of bounds read in Secure Access MacOS clients prior to 14.50 | |
| CVE-2026-33452 | Buffer overflow in Windows clients prior to 14.50 | |
| CVE-2026-40950 | Buffer overflow in the Secure Access server prior to 14.50 |
IV. Related Vulnerabilities
Same product: Secure Access
Same vendor: Absolute Software
-
CVE-2026-40950
Buffer overflow in the Secure Access server prior to 14.50 -
CVE-2026-40949
Buffer overflow in Windows clients prior to 14.50 -
CVE-2026-33452
Buffer overflow in Windows clients prior to 14.50 -
CVE-2026-33451
Arbitrary read/write vulnerability in Windows clients prior -
CVE-2026-33450
Out of bounds read in Secure Access MacOS clients prior to 1
V. Comments for CVE-2026-40951
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