CVE-2026-20083 — Improper Handling of Extra Parameters in Cisco IOS XE Software

CWE-235 — Improper Handling of Extra Parameters4 documents4 sources
Severity
6.5MEDIUMNVD
EPSS
0.0%
top 91.91%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Cisco IOS XE Software
Timeline
PublishedMar 25

Description

A vulnerability in the Secure Copy Protocol (SCP) server feature of Cisco IOS XE Software could allow an authenticated, local attacker with low privileges to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of a malformed SCP request. An attacker could exploit this vulnerability by issuing a crafted command through SSH. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condit…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:HExploitability: 2.0 | Impact: 4.0

Affected Packages1 packages

▶CVEListV5cisco/cisco_ios_xe_software317 versions+316

🔴Vulnerability Details

2
CVEList
CVE-2026-20083: A vulnerability in the Secure Copy Protocol (SCP) server feature of Cisco IOS XE Software could allow an authenticated, local attacker with low privil↗2026-03-25
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GHSA
GHSA-74wh-qxxr-jvr4: A vulnerability in the Secure Copy Protocol (SCP) server feature of Cisco IOS XE Software could allow an authenticated, local attacker with low privil↗2026-03-25
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📋Vendor Advisories

1
Cisco
Cisco IOS XE Software Secure Copy Protocol Server Denial of Service Vulnerability↗2026-03-25
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CVE-2026-20083 — Improper Handling of Extra Parameters | cvebase