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CVE-2026-55402

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.

CVE-2026-55402 是 Secure Access 服务器在 14.57 版本之前存在的一个越界读取漏洞。具有“中间人”（Man-in-the-Middle）攻击位置的攻击者可以向服务器发送精心构造的数据，从而导致持久的服务拒绝（Denial of Service）状态。

CVSS 8.7 · High EPSS 0.40% · P32

Affected Version Matrix 1

VendorProduct Version RangeStatus
Absolute Security Secure Access < 14.57 affected
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I. Basic Information for CVE-2026-55402

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
CVE-2026-55402 is an out of bounds read vulnerability in Secure Access servers prior to version 14.57. Attackers with an ‘in the middle’ position can send specially crafted data to a server causing a persistent denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Absolute Security Secure Access 0 ~ 14.57 -

II. Public POCs for CVE-2026-55402

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III. Intelligence Information for CVE-2026-55402

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Vendor Advisories for CVE-2026-55402 (1)

Same Patch Batch · Absolute Security · 2026-08-13 · 3 CVEs total

CVE-2026-55401 6.9 MEDIUM Secure Access<14.57空指针引用致负载子系统崩溃
CVE-2026-55400 6.0 MEDIUM Secure Access <14.57整数下溢致拒绝服务

IV. Related Vulnerabilities

Same product: Secure Access
Same vendor: Absolute Security

V. Comments for CVE-2026-55402

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