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

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-28197— Privilege Escalation via Argument Injection in NetBackup Flex OS Shell

Quick assessment

Affected
Cohesity NetBackup Flex OS
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.

一个经过身份验证的低权限用户，若拥有访问 NetBackup Flex OS 管理 shell 的权限，可以向一个具有管理员特权的命令提供精心构造的输入，从而以 root 级别权限执行任意代码。成功利用该漏洞将使攻击者获得对 Flex 设备主机及其所有托管容器的完全控制，从而彻底破坏系统的机密性、完整性和可用性。

CVSS 8.8 · High EPSS 0.37% · P31

Affected Version Matrix 1

VendorProduct Version RangeStatus
Cohesity NetBackup Flex OS < 6.4 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-28197

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Privilege Escalation via Argument Injection in NetBackup Flex OS Shell
Source: CVE Program / CVE List V5
Vulnerability Description
An authenticated, low-privileged user with access to the NetBackup Flex OS management shell could supply a specially crafted input to a privileged administrative command, causing it to execute arbitrary code with root-level permissions. Successful exploitation grants the attacker unrestricted control over the Flex appliance host and all hosted containers, fully compromising confidentiality, integrity, and availability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
参数注入或修改
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cohesity NetBackup Flex OS 0 ~ 6.4 -

II. Public POCs for CVE-2026-28197

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-28197

请登录查看更多情报信息。

Other References for CVE-2026-28197 (2)

Same Patch Batch · Cohesity · 2026-09-18 · 3 CVEs total

CVE-2026-28198 8.8 HIGH Privilege Escalation via Cryptographic Signature Verification Bypass in NetBackup Flex OS
CVE-2026-28199 3.3 LOW Sensitive File Disclosure via Relative Path Traversal in NetBackup Flex OS Shell

IV. Related Vulnerabilities

Same product: NetBackup Flex OS
Same vendor: Cohesity
Same weakness: CWE-88

V. Comments for CVE-2026-28197

No comments yet

Leave a comment