CVE-2026-40949— Buffer overflow in Windows clients prior to 14.50
Possible ATT&CK Techniques 1AI
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-2026-40949
Vulnerability Information
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Vulnerability Title
Buffer overflow in Windows clients prior to 14.50
Source: CVE Program / CVE List V5
Vulnerability Description
CVE-2026-40949 is a buffer overflow vulnerability in the Secure Access Windows client prior to 14.50. Attackers with local control of the Windows client can use it to trigger a denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/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 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Absolute Secure Access是Absolute公司的一款应用程序。以提供针对混合和移动工作模式优化的安全服务边缘（SSE）。 Absolute Secure Access 14.50之前版本存在安全漏洞，该漏洞源于缓冲区溢出，可能导致本地攻击者触发拒绝服务。
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-2026-40949
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Vendor Advisories for CVE-2026-40949 (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-2026-33451 | 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 | |
| CVE-2026-40951 | Memory corruption in Secure Access Windows clients prior to 14.50 |
IV. Related Vulnerabilities
Same product: Secure Access
- CVE-2026-55399
Resource exhaustion vulnerability in the Secure Access publi - CVE-2026-55398
Memory management vulnerability in Secure Access clients - CVE-2026-33445
Memory management vulnerability in Secure Access servers - CVE-2026-33444
Memory management vulnerability in Secure Access servers - CVE-2026-33443
Memory management error in Secure Access servers prior to 14
Same vendor: Absolute Software
- CVE-2026-40951
Memory corruption in Secure Access Windows clients prior to - CVE-2026-40950
Buffer overflow in the Secure Access server 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-2026-40949
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