CVE-2026-40538
Quick assessment
Affected
Synology DiskStation Manager (DSM)
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.
An improper restriction of excessive authentication attempts vulnerability in Auto block in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows remote attackers to read limited files via brute-force attacks.
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-40538
Vulnerability Information
Shenlong is analyzing...
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
An improper restriction of excessive authentication attempts vulnerability in Auto block in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows remote attackers to read limited files via brute-force attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Synology | DiskStation Manager (DSM) | 7.3 ~ 7.3.2-86009-2 | - |
|
II. Public POCs for CVE-2026-40538
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-40538
请登录查看更多情报信息。
Other References for CVE-2026-40538 (1)
-
Synology_SA_26_06 | Synology Inc. vendor-advisory
Same Patch Batch · Synology · 2026-09-18 · 19 CVEs total
| CVE-2026-13684 | 9.8 CRITICAL | Synology DSM SCGI不当编码致任意文件读写 |
| CVE-2026-13639 | 9.8 CRITICAL | 群晖DSM多版本登录熵不足漏洞 |
| CVE-2026-13673 | 8.8 HIGH | 群晖DSM低版本LDAP权限漏洞致任意文件读写 |
| CVE-2026-6205 | 8.1 HIGH | 群晖DSM上传API文件名控制致任意文件写入 |
| CVE-2026-40530 | 8.0 HIGH | 群晖DSM特定版本User API CRLF注入漏洞 |
| CVE-2026-40539 | 7.1 HIGH | Synology DSM Email API证书验证漏洞 |
| CVE-2026-40532 | 6.5 MEDIUM | Synology DSM强制浏览漏洞致信息泄露 |
| CVE-2026-4036 | 6.5 MEDIUM | 群晖DSM低版本Sharing API SQL注入致文件获取 |
| CVE-2026-40535 | 6.5 MEDIUM | DSM 7.2/7.3路径遍历漏洞 |
| CVE-2026-40534 | 5.4 MEDIUM | Synology DSM Video API XSS漏洞 |
| CVE-2026-13635 | 5.3 MEDIUM | 群晖DSM Auth API输出转义缺陷 |
| CVE-2026-40533 | 5.3 MEDIUM | 群晖DSM 7.x敏感信息泄露漏洞 |
| CVE-2026-13623 | 4.8 MEDIUM | 群晖DSM多版本主题API XSS漏洞 |
| CVE-2026-40531 | 4.3 MEDIUM | Synology DSM文件操作整数溢出DoS漏洞 |
| CVE-2026-40536 | 4.3 MEDIUM | 群晖DSM Audio API路径遍历漏洞 |
| CVE-2026-40537 | 4.3 MEDIUM | 群晖DSM PersonMail API SSRF漏洞 |
| CVE-2026-13666 | 3.5 LOW | 群晖DSM共享API CRLF注入致文件写入漏洞 |
| CVE-2026-13683 | 2.7 LOW | 群晖DSM EventScheduler API SQL注入漏洞 |
IV. Related Vulnerabilities
Same weakness: CWE-307
-
CVE-2026-56592
HCL BigFix Service Management is affected by multiple securi -
CVE-2026-92583
AVideo through 29.0 Rate Limit Bypass via Non-Atomic Counter -
CVE-2026-91973
Vikunja before 2.6.0 Authentication Bypass via CalDAV BasicA -
CVE-2026-91972
Vikunja before 2.6.0 Authentication Bypass via Unthrottled A -
CVE-2026-92082
Payara Server is vulnerable to brute-force login attacks due
V. Comments for CVE-2026-40538
No comments yet