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CVE-2026-84427— zhayujie CowAgent Bash Tool bash.py denial of service

Quick assessment

Affected
zhayujie CowAgent
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.

在 zhayujie CowAgent 2.1.7 及更早版本中发现了一个漏洞。受影响的组件是 Bash Tool，具体位于文件 中的一个未知函数。该漏洞允许通过远程操作导致服务拒绝（Denial of Service, DoS）。利用该漏洞的攻击可以远程发起，且该漏洞的利用方式已公开披露，可能被利用。供应商已被提前联系，但未对此次披露作出任何回应。

CVSS 4.3 · Medium EPSS 0.27% · P19

Affected Version Matrix 8

VendorProduct Version RangeStatus
zhayujie CowAgent 2.1.0 affected
2.1.1 affected
2.1.2 affected
2.1.3 affected
2.1.4 affected
2.1.5 affected
2.1.6 affected
2.1.7 affected
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I. Basic Information for CVE-2026-84427

Vulnerability Information
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Vulnerability Title
zhayujie CowAgent Bash Tool bash.py denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in zhayujie CowAgent up to 2.1.7. Affected is an unknown function of the file agent/tools/bash/bash.py of the component Bash Tool. Executing a manipulation can lead to denial of service. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不恰当的资源关闭或释放
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
zhayujie CowAgent 2.1.0 cpe:2.3:a:zhayujie:cowagent:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-84427

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III. Intelligence Information for CVE-2026-84427

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Vendor Advisories for CVE-2026-84427 (2)

Proof of Concept for CVE-2026-84427 (1)

Other References for CVE-2026-84427 (1)

IV. Related Vulnerabilities

Same product: CowAgent
Same vendor: zhayujie
Same weakness: CWE-404

V. Comments for CVE-2026-84427

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