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CVE-2026-55995— Double-free in the iSNS attribute decoder in open-iscsi

CVSS 8.7 · High EPSS 0.25% · P17

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProductVersion RangeStatus
open-iscsiopen-iscsi?≤ 56718d4e9d1a4f51c30697b5c0534144bb41c9bbaffected
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I. Basic Information for CVE-2026-55995

Vulnerability Information
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Vulnerability Title
Double-free in the iSNS attribute decoder in open-iscsi
Source: CVE Program / CVE List V5
Vulnerability Description
A Double Free vulnerability in open-iscsi allows an unauthenticated MITM attacker to cause DoS. This issue affects open-iscsi: from ? through 56718d4e9d1a4f51c30697b5c0534144bb41c9bb.
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:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
双重释放
Source: CVE Program / CVE List V5
Vulnerability Title
Open-iSCSI 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open-iSCSI Open-iSCSI是Open-iSCSI组织开源的一个网络存储连接工具。 Open-iSCSI存在资源管理错误漏洞，该漏洞源于双重释放漏洞，可能导致未经验证的中间人攻击者造成拒绝服务。
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

VendorProductAffected VersionsCPESubscribe
open-iscsiopen-iscsi ? ~ 56718d4e9d1a4f51c30697b5c0534144bb41c9bb -

II. Public POCs for CVE-2026-55995

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 9863 chars
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III. Intelligence Information for CVE-2026-55995

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Patches & Fixes for CVE-2026-55995 (1)

Other References for CVE-2026-55995 (1)

Same Patch Batch · open-iscsi · 2026-07-29 · 3 CVEs total

CVE-2026-449448.5 HIGHiscsiuio control-socket authentication bypass in open-iscsi
CVE-2026-449436.9 MEDIUMremote limited file-write as root via discovery in open-iscsi

IV. Related Vulnerabilities

Same product: open-iscsi
Same vendor: open-iscsi
Same weakness: CWE-415

V. Comments for CVE-2026-55995

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