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CVE-2026-75878— IBM Sterling File Gateway is Vulnerable to Authentication Bypass

Quick assessment

Affected
IBM Sterling File Gateway
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.

IBM Sterling File Gateway 可能允许远程攻击者通过利用未经验证的 SSO 头部进行不当身份验证，从而绕过身份验证并获取一个完全经过身份验证的会话。

CVSS 9.1 · Critical EPSS 0.64% · P51

Possible ATT&CK Techniques 1 AI

T1078.004 · Cloud Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
IBM Sterling File Gateway 6.2.0.0≤ 6.2.0.6_1, 6.2.1.0 - 6.2.1.2, 6.2.2.0 - 6.2.2.1 affected
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I. Basic Information for CVE-2026-75878

Vulnerability Information
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Vulnerability Title
IBM Sterling File Gateway is Vulnerable to Authentication Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
IBM Sterling File Gateway could allow a remote attacker to bypass authentication and obtain a fully authenticated session due to improper authentication via an unvalidated SSO header.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM Sterling File Gateway 6.2.0.0 ~ 6.2.0.6_1, 6.2.1.0 - 6.2.1.2, 6.2.2.0 - 6.2.2.1 cpe:2.3:a:ibm:sterling_file_gateway:6.2.0.0:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-75878

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-75878

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Other References for CVE-2026-75878 (1)

Same Patch Batch · IBM · 2026-09-18 · 90 CVEs total

CVE-2026-10747 10.0 CRITICAL IBM MQ Appliance is affected by a heap buffer overflow vulnerability in protocol message p
CVE-2025-15399 10.0 CRITICAL Multiple vulnerabilities affect IBM License Key Server Administration and Reporting Tool a
CVE-2026-84075 9.9 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84064 9.9 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-10858 9.9 CRITICAL IBM MQ for HPE NonStop is vulnerable to a denial of service attack
CVE-2026-84078 9.9 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-80442 9.9 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-82340 9.8 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84082 9.8 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-81657 9.8 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-80441 9.8 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-82967 9.8 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-82832 9.6 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84073 9.1 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84031 9.0 CRITICAL IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84106 8.9 HIGH IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84074 8.9 HIGH IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-84070 8.9 HIGH IBM Guardium Data Protection is affected by multiple vulnerabilities.
CVE-2026-11375 8.8 HIGH IBM MQ queue manager is vulnerable to remote code execution
CVE-2026-84084 8.8 HIGH IBM Guardium Data Protection is affected by multiple vulnerabilities.

Showing top 20 of 90 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Sterling File Gateway
Same vendor: IBM
Same weakness: CWE-287