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The vulnerability of the Cisco IOS XE operating system’s loader allows a hacker to execute arbitrary code.

🗓️ 13 May 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec
🔗 bdu.fstec.ru👁 4 Views

The Cisco IOS XE loader vulnerability allows arbitrary code execution due to a buffer overflow.

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Detection
Refs
ReporterTitlePublishedViews
Family
Circl
CVE-2026-20104
26 Mar 202603:00
circl
Cisco
Cisco IOS XE Software for Cisco Catalyst and Rugged Series Switches Secure Boot Bypass Vulnerability
25 Mar 202616:00
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Tenable Nessus
Cisco IOS XE Software for Catalyst Rugged Series Switches Secure Boot Bypass (cisco-sa-xe-secureboot-bypass-B6uYxYSZ)
25 Mar 202600:00
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CNNVD
Cisco多款产品 安全漏洞
25 Mar 202600:00
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CVE
CVE-2026-20104
25 Mar 202616:05
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Cvelist
CVE-2026-20104
25 Mar 202616:05
cvelist
EUVD
EUVD-2026-15435
25 Mar 202618:31
euvd
NCSC
Vulnerabilities fixed in Cisco IOS XE Software
26 Mar 202609:50
ncsc
NVD
CVE-2026-20104
25 Mar 202616:16
nvd
Positive Technologies
PT-2026-27792
25 Mar 202600:00
ptsecurity
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13 May 2026 00:00Current
6.2Medium risk
Vulners AI Score6.2
CVSS 36.1
CVSS 26.6
EPSS0.00162
4