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The vulnerability of the Cisco IOS XE operating system’s TLS library allows attackers to trigger memory exhaustion or service failure.

🗓️ 13 May 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec
🔗 bdu.fstec.ru👁 3 Views

Cisco IOS XE TLS library vulnerability enables remote memory exhaustion or service failure.

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Detection
Refs
ReporterTitlePublishedViews
Family
Circl
CVE-2026-20004
25 Mar 202618:51
circl
Cisco
Cisco IOS XE Software TLS Memory Exhaustion Denial of Service Vulnerability
25 Mar 202616:00
cisco
CNNVD
Cisco IOS XE Software 安全漏洞
25 Mar 202600:00
cnnvd
CVE
CVE-2026-20004
25 Mar 202616:04
cve
Cvelist
CVE-2026-20004
25 Mar 202616:04
cvelist
EUVD
EUVD-2026-15426
25 Mar 202618:31
euvd
NCSC
Vulnerabilities fixed in Cisco IOS XE Software
26 Mar 202609:50
ncsc
NVD
CVE-2026-20004
25 Mar 202616:16
nvd
Positive Technologies
PT-2026-27787
25 Mar 202600:00
ptsecurity
RedhatCVE
CVE-2026-20004
26 Mar 202617:00
redhatcve
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13 May 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 26.1
CVSS 37.4
EPSS0.00179
3