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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-31984— DoS through oversized audit log entries in Guardian/CMC before 26.2.0

Quick assessment

Affected
Nozomi Networks Guardian
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.

Nozomi Networks Guardian是美国Nozomi Networks公司的网络安全产品。 Guardian 26.2.0之前版本存在资源管理错误漏洞，该漏洞源于审计日志功能中未限制输入大小，可能导致未经验证的攻击者提交大型输入，耗尽磁盘空间，造成拒绝服务。

CVSS 7.5 · High EPSS 0.51% · P41

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 2

VendorProduct Version RangeStatus
Nozomi Networks CMC < 26.2.0 affected
Nozomi Networks Guardian < 26.2.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-31984

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
DoS through oversized audit log entries in Guardian/CMC before 26.2.0
Source: CVE Program / CVE List V5
Vulnerability Description
A denial-of-service vulnerability caused by unbounded resource allocation was discovered in the audit logging functionality, due to a missing size limit on input recorded into audit entries. An unauthenticated attacker can submit requests containing excessively large input that is recorded into audit entries, possibly exhausting the available disk space and rendering the system inoperable.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Nozomi Networks Guardian 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nozomi Networks Guardian是美国Nozomi Networks公司的网络安全产品。 Guardian 26.2.0之前版本存在资源管理错误漏洞，该漏洞源于审计日志功能中未限制输入大小，可能导致未经验证的攻击者提交大型输入，耗尽磁盘空间，造成拒绝服务。
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
Nozomi Networks Guardian 0 ~ 26.2.0 -
Nozomi Networks CMC 0 ~ 26.2.0 -

II. Public POCs for CVE-2026-31984

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-31984

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-31984 (1)

Same Patch Batch · Nozomi Networks · 2026-07-09 · 6 CVEs total

CVE-2026-31985 8.1 HIGH Disabled and non-configurable TLS certificate validation in n2os-tui when connecting the R
CVE-2026-33390 8.1 HIGH Incorrect privilege assignment for Arc sensors in Guardian/CMC before 26.2.0
CVE-2026-31982 7.1 HIGH Open Redirect in SAML Single Sign-On in Guardian/CMC before 26.2.0
CVE-2026-31981 5.9 MEDIUM HTML injection in Diagram tab and Graph view in Guardian/CMC before 26.2.0
CVE-2026-31983 5.3 MEDIUM Missing authentication in SSH keys synchronization endpoint in Guardian/CMC before 26.2.0

IV. Related Vulnerabilities

Same product: Guardian
Same vendor: Nozomi Networks
Same weakness: CWE-770

V. Comments for CVE-2026-31984

No comments yet

Leave a comment