PT-2026-27789 · Cisco · Cisco Ios Xe

Published 2026-03-25 · Updated 2026-03-30 · CVE-2026-20083

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software (affected versions not specified)

Description A flaw exists in the Secure Copy Protocol (SCP) server feature that may allow a local attacker with limited privileges to disrupt service. This is caused by the improper processing of a specially crafted SCP request. An attacker could leverage this by sending a malicious command through SSH, potentially causing the device to unexpectedly reload, leading to a denial of service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Weakness Enumeration

CWE-235

Related Identifiers

BDU:2026-06539

CVE-2026-20083

Affected Products

Cisco Ios Xe

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-20083 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-scp-dos-duAdXtCg · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-06539 · Security Note
• https://twitter.com/CVEnew/status/2038618151055671375 · Twitter Post