Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-55401

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-2026-55401 是一个发生在 Secure Access 服务器负载均衡子系统中的空指针解引用漏洞，影响 14.57 版本之前的所有 Secure Access 服务器。攻击者可以向启用了负载均衡功能的 Secure Access 服务器发送未经身份验证的数据包，导致内部负载均衡器崩溃。成功攻击后，Secure Access 服务器仍然能够接受连接，并能够向已连接的客户端执行故障转移（failover）。 参考 CVSS 4.0 评分：AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:

CVSS 6.9 · Medium EPSS 0.40% · P32

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
Absolute Security Secure Access < 14.57 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-55401

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
CVE-2026-55401 is a null dereference vulnerability on the load-balancing sub-system of Secure Access servers prior to 14.57. Attackers can send an unauthenticated packet to a Secure Access server with load balancing enabled, which results in the internal load balancer crashing. After a successful attack, the Secure Access server is still able to accept connections and is still able to issue a failover to connected clients. ‍ https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
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:L/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-2026-55401

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-55401

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-55401 (1)

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

CVE-2026-55402 8.7 HIGH Secure Access servers <14.57越界读取导致DoS
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-2026-55401

No comments yet

Leave a comment