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CVE-2026-40950— Buffer overflow in the Secure Access server 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，可能导致攻击者通过特制消息触发拒绝服务。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.42% · P34

Affected Version Matrix 1

VendorProduct Version RangeStatus
Absolute Software Secure Access < 14.50 affected
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I. Basic Information for CVE-2026-40950

Vulnerability Information
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Vulnerability Title
Buffer overflow in the Secure Access server prior to 14.50
Source: CVE Program / CVE List V5
Vulnerability Description
CVE-2026-40950 is a buffer overflow vulnerability in the Secure Access server prior to 14.50. Attackers with control of a modified client can send a specially crafted message to the server and cause a denial of service
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/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 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，可能导致攻击者通过特制消息触发拒绝服务。
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-2026-40950

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III. Intelligence Information for CVE-2026-40950

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Vendor Advisories for CVE-2026-40950 (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-2026-40951 Memory corruption in Secure Access Windows clients prior to 14.50

IV. Related Vulnerabilities

Same product: Secure Access
Same vendor: Absolute Software

V. Comments for CVE-2026-40950

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