CVE-2026-40956— Memory disclosure in Secure Access Clients
Quick assessment
Affected
Absolute Security 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公司的一套企业访问控制解决方案。 Absolute Secure Access 14.55之前版本存在安全漏洞，该漏洞源于内存泄露问题，可能导致熟悉并完全控制隧道协议的攻击者泄露少量随机内存。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud StorageAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Absolute Security | Secure Access | < 14.55 |
affected |
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I. Basic Information for CVE-2026-40956
Vulnerability Information
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Vulnerability Title
Memory disclosure in Secure Access Clients
Source: CVE Program / CVE List V5
Vulnerability Description
CVE-2026-40956
is a memory disclosure vulnerability in Secure Access client versions prior to 14.55.
Attackers with intimate knowledge of and total control over the tunnel protocol
can cause a small amount of random memory to leak.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/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公司的一套企业访问控制解决方案。 Absolute Secure Access 14.55之前版本存在安全漏洞，该漏洞源于内存泄露问题，可能导致熟悉并完全控制隧道协议的攻击者泄露少量随机内存。
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 Security | Secure Access | 0 ~ 14.55 | - |
|
II. Public POCs for CVE-2026-40956
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-40956 (1)
Same Patch Batch · Absolute Security · 2026-07-15 · 11 CVEs total
| CVE-2026-40952 | Privilge misconfiguration in Secure Access installers | |
| CVE-2026-40953 | Heap overflow in Secure Access clients | |
| CVE-2026-40958 | Input validation error in Secure Access clients prior to 14.55 | |
| CVE-2026-40957 | Frameable content vulnerability in the Secure Access server login page | |
| CVE-2026-40954 | Integer underflow in Secure Access clients prior to 14.55 | |
| CVE-2026-40955 | Integer underflow vulnerability in Secure Access clients | |
| CVE-2026-33443 | Memory management error in Secure Access servers prior to 14.55 | |
| CVE-2026-55399 | Resource exhaustion vulnerability in the Secure Access publisher | |
| CVE-2026-55398 | Memory management vulnerability in Secure Access clients | |
| CVE-2026-33445 | Memory management vulnerability in Secure Access servers |
IV. Related Vulnerabilities
Same product: Secure Access
Same vendor: Absolute Security
V. Comments for CVE-2026-40956
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