# CVE-2026-20083 ## Summary - **CVE ID:** CVE-2026-20083 - **Severity:** MEDIUM - **CVSS Score:** 6.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H) - **CWE:** CWE-235 - **Published:** Mar 25, 2026 - **Last Modified:** Mar 27, 2026 ## 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 condition. ## Affected Products - Cisco — Cisco IOS XE Software (17.6.2) - Cisco — Cisco IOS XE Software (3.5.0E) - Cisco — Cisco IOS XE Software (3.5.1E) - Cisco — Cisco IOS XE Software (3.5.2E) - Cisco — Cisco IOS XE Software (3.5.3E) - Cisco — Cisco IOS XE Software (3.11.1S) - Cisco — Cisco IOS XE Software (3.11.2S) - Cisco — Cisco IOS XE Software (3.11.0S) - Cisco — Cisco IOS XE Software (3.11.3S) - Cisco — Cisco IOS XE Software (3.11.4S) - Cisco — Cisco IOS XE Software (3.12.0S) - Cisco — Cisco IOS XE Software (3.12.1S) - Cisco — Cisco IOS XE Software (3.12.2S) - Cisco — Cisco IOS XE Software (3.12.3S) - Cisco — Cisco IOS XE Software (3.12.0aS) - Cisco — Cisco IOS XE Software (3.12.4S) - Cisco — Cisco IOS XE Software (3.13.0S) - Cisco — Cisco IOS XE Software (3.13.1S) - Cisco — Cisco IOS XE Software (3.13.2S) - Cisco — Cisco IOS XE Software (3.13.3S) - Cisco — Cisco IOS XE Software (3.13.4S) - Cisco — Cisco IOS XE Software (3.13.5S) - Cisco — Cisco IOS XE Software (3.13.2aS) - Cisco — Cisco IOS XE Software (3.13.0aS) - Cisco — Cisco IOS XE Software (3.13.5aS) - Cisco — Cisco IOS XE Software (3.13.6S) - Cisco — Cisco IOS XE Software (3.13.7S) - Cisco — Cisco IOS XE Software (3.13.6aS) - Cisco — Cisco IOS XE Software (3.6.0E) - Cisco — Cisco IOS XE Software (3.6.1E) - Cisco — Cisco IOS XE Software (3.6.2aE) - Cisco — Cisco IOS XE Software (3.6.2E) - Cisco — Cisco IOS XE Software (3.6.3E) - Cisco — Cisco IOS XE Software (3.6.4E) - Cisco — Cisco IOS XE Software (3.6.5E) - Cisco — Cisco IOS XE Software (3.6.6E) - Cisco — Cisco IOS XE Software (3.6.5aE) - Cisco — Cisco IOS XE Software (3.14.0S) - Cisco — Cisco IOS XE Software (3.14.1S) - Cisco — Cisco IOS XE Software (3.14.2S) - Cisco — Cisco IOS XE Software (3.14.3S) - Cisco — Cisco IOS XE Software (3.14.4S) - Cisco — Cisco IOS XE Software (3.15.0S) - Cisco — Cisco IOS XE Software (3.15.1S) - Cisco — Cisco IOS XE Software (3.15.2S) - Cisco — Cisco IOS XE Software (3.15.1cS) - Cisco — Cisco IOS XE Software (3.15.3S) - Cisco — Cisco IOS XE Software (3.15.4S) - Cisco — Cisco IOS XE Software (3.7.0E) - Cisco — Cisco IOS XE Software (3.7.1E) - Cisco — Cisco IOS XE Software (3.7.2E) - Cisco — Cisco IOS XE Software (3.7.3E) - Cisco — Cisco IOS XE Software (3.7.4E) - Cisco — Cisco IOS XE Software (3.7.5E) - Cisco — Cisco IOS XE Software (3.16.0S) - Cisco — Cisco IOS XE Software (3.16.1S) - Cisco — Cisco IOS XE Software (3.16.1aS) - Cisco — Cisco IOS XE Software (3.16.2S) - Cisco — Cisco IOS XE Software (3.16.2aS) - Cisco — Cisco IOS XE Software (3.16.0cS) - Cisco — Cisco IOS XE Software (3.16.3S) - Cisco — Cisco IOS XE Software (3.16.2bS) - Cisco — Cisco IOS XE Software (3.16.3aS) - Cisco — Cisco IOS XE Software (3.16.4S) - Cisco — Cisco IOS XE Software (3.16.4aS) - Cisco — Cisco IOS XE Software (3.16.4bS) - Cisco — Cisco IOS XE Software (3.16.5S) - Cisco — Cisco IOS XE Software (3.16.4dS) - Cisco — Cisco IOS XE Software (3.17.0S) - Cisco — Cisco IOS XE Software (3.17.1S) - Cisco — Cisco IOS XE Software (3.17.2S) - Cisco — Cisco IOS XE Software (3.17.1aS) - Cisco — Cisco IOS XE Software (3.17.3S) - Cisco — Cisco IOS XE Software (3.8.0E) - Cisco — Cisco IOS XE Software (3.8.1E) - Cisco — Cisco IOS XE Software (3.8.2E) - Cisco — Cisco IOS XE Software (3.8.3E) - Cisco — Cisco IOS XE Software (3.18.0aS) - Cisco — Cisco IOS XE Software (3.18.0S) - Cisco — Cisco IOS XE Software (3.18.1S) - Cisco — Cisco IOS XE Software (3.18.2S) - Cisco — Cisco IOS XE Software (3.18.0SP) - Cisco — Cisco IOS XE Software (3.18.1SP) - Cisco — Cisco IOS XE Software (3.18.1aSP) - Cisco — Cisco IOS XE Software (3.18.1bSP) - Cisco — Cisco IOS XE Software (3.18.1cSP) - Cisco — Cisco IOS XE Software (3.9.0E) - Cisco — Cisco IOS XE Software (3.9.1E) - Cisco — Cisco IOS XE Software (16.6.1) - Cisco — Cisco IOS XE Software (16.6.2) - Cisco — Cisco IOS XE Software (16.6.3) - Cisco — Cisco IOS XE Software (16.6.4) - Cisco — Cisco IOS XE Software (16.6.5) - Cisco — Cisco IOS XE Software (16.6.4a) - Cisco — Cisco IOS XE Software (16.6.5a) - Cisco — Cisco IOS XE Software (16.6.6) - Cisco — Cisco IOS XE Software (16.6.7) - Cisco — Cisco IOS XE Software (16.6.8) - Cisco — Cisco IOS XE Software (16.6.9) - Cisco — Cisco IOS XE Software (16.6.10) - Cisco — Cisco IOS XE Software (16.7.1) - Cisco — Cisco IOS XE Software (16.7.1a) - Cisco — Cisco IOS XE Software (16.7.1b) - Cisco — Cisco IOS XE Software (16.7.2) - Cisco — Cisco IOS XE Software (16.7.3) - Cisco — Cisco IOS XE Software (16.7.4) - Cisco — Cisco IOS XE Software (16.8.1) - Cisco — Cisco IOS XE Software (16.8.1a) - Cisco — Cisco IOS XE Software (16.8.1b) - Cisco — Cisco IOS XE Software (16.8.1s) - Cisco — Cisco IOS XE Software (16.8.1c) - Cisco — Cisco IOS XE Software (16.8.1d) - Cisco — Cisco IOS XE Software (16.8.2) - Cisco — Cisco IOS XE Software (16.8.1e) - Cisco — Cisco IOS XE Software (16.8.3) - Cisco — Cisco IOS XE Software (16.9.1) - Cisco — Cisco IOS XE Software (16.9.2) - Cisco — Cisco IOS XE Software (16.9.1a) - Cisco — Cisco IOS XE Software (16.9.1b) - Cisco — Cisco IOS XE Software (16.9.1s) - Cisco — Cisco IOS XE Software (16.9.3) - Cisco — Cisco IOS XE Software (16.9.4) - Cisco — Cisco IOS XE Software (16.9.3a) - Cisco — Cisco IOS XE Software (16.9.5) - Cisco — Cisco IOS XE Software (16.9.5f) - Cisco — Cisco IOS XE Software (16.9.6) - Cisco — Cisco IOS XE Software (16.9.7) - Cisco — Cisco IOS XE Software (16.9.8) - Cisco — Cisco IOS XE Software (16.10.1) - Cisco — Cisco IOS XE Software (16.10.1a) - Cisco — Cisco IOS XE Software (16.10.1b) - Cisco — Cisco IOS XE Software (16.10.1s) - Cisco — Cisco IOS XE Software (16.10.1c) - Cisco — Cisco IOS XE Software (16.10.1e) - Cisco — Cisco IOS XE Software (16.10.1d) - Cisco — Cisco IOS XE Software (16.10.2) - Cisco — Cisco IOS XE Software (16.10.1f) - Cisco — Cisco IOS XE Software (16.10.1g) - Cisco — Cisco IOS XE Software (16.10.3) - Cisco — Cisco IOS XE Software (16.11.1) - Cisco — Cisco IOS XE Software (16.11.1a) - Cisco — Cisco IOS XE Software (16.11.1b) - Cisco — Cisco IOS XE Software (16.11.2) - Cisco — Cisco IOS XE Software (16.11.1s) - Cisco — Cisco IOS XE Software (16.12.1) - Cisco — Cisco IOS XE Software (16.12.1s) - Cisco — Cisco IOS XE Software (16.12.1a) - Cisco — Cisco IOS XE Software (16.12.1c) - Cisco — Cisco IOS XE Software (16.12.1w) - Cisco — Cisco IOS XE Software (16.12.2) - Cisco — Cisco IOS XE Software (16.12.1y) - Cisco — Cisco IOS XE Software (16.12.2a) - Cisco — Cisco IOS XE Software (16.12.3) - Cisco — Cisco IOS XE Software (16.12.8) - Cisco — Cisco IOS XE Software (16.12.2s) - Cisco — Cisco IOS XE Software (16.12.1x) - Cisco — Cisco IOS XE Software (16.12.1t) - Cisco — Cisco IOS XE Software (16.12.4) - Cisco — Cisco IOS XE Software (16.12.3s) - Cisco — Cisco IOS XE Software (16.12.3a) - Cisco — Cisco IOS XE Software (16.12.4a) - Cisco — Cisco IOS XE Software (16.12.5) - Cisco — Cisco IOS XE Software (16.12.6) - Cisco — Cisco IOS XE Software (16.12.1z1) - Cisco — Cisco IOS XE Software (16.12.5a) - Cisco — Cisco IOS XE Software (16.12.5b) - Cisco — Cisco IOS XE Software (16.12.1z2) - Cisco — Cisco IOS XE Software (16.12.6a) - Cisco — Cisco IOS XE Software (16.12.7) - Cisco — Cisco IOS XE Software (16.12.9) - Cisco — Cisco IOS XE Software (16.12.10) - Cisco — Cisco IOS XE Software (16.12.10a) - Cisco — Cisco IOS XE Software (16.12.11) - Cisco — Cisco IOS XE Software (16.12.12) - Cisco — Cisco IOS XE Software (16.12.13) - Cisco — Cisco IOS XE Software (16.12.14) - Cisco — Cisco IOS XE Software (17.1.1) - Cisco — Cisco IOS XE Software (17.1.1a) - Cisco — Cisco IOS XE Software (17.1.1s) - Cisco — Cisco IOS XE Software (17.1.1t) - Cisco — Cisco IOS XE Software (17.1.3) - Cisco — Cisco IOS XE Software (17.2.1) - Cisco — Cisco IOS XE Software (17.2.1r) - Cisco — Cisco IOS XE Software (17.2.1a) - Cisco — Cisco IOS XE Software (17.2.1v) - Cisco — Cisco IOS XE Software (17.2.2) - Cisco — Cisco IOS XE Software (17.2.3) - Cisco — Cisco IOS XE Software (17.3.1) - Cisco — Cisco IOS XE Software (17.3.2) - Cisco — Cisco IOS XE Software (17.3.3) - Cisco — Cisco IOS XE Software (17.3.1a) - Cisco — Cisco IOS XE Software (17.3.1w) - Cisco — Cisco IOS XE Software (17.3.2a) - Cisco — Cisco IOS XE Software (17.3.1x) - Cisco — Cisco IOS XE Software (17.3.1z) - Cisco — Cisco IOS XE Software (17.3.4) - Cisco — Cisco IOS XE Software (17.3.5) - Cisco — Cisco IOS XE Software (17.3.4a) - Cisco — Cisco IOS XE Software (17.3.6) - Cisco — Cisco IOS XE Software (17.3.4b) - Cisco — Cisco IOS XE Software (17.3.4c) - Cisco — Cisco IOS XE Software (17.3.5a) - Cisco — Cisco IOS XE Software (17.3.5b) - Cisco — Cisco IOS XE Software (17.3.7) - Cisco — Cisco IOS XE Software (17.3.8) - Cisco — Cisco IOS XE Software (17.3.8a) - Cisco — Cisco IOS XE Software (17.4.1) - Cisco — Cisco IOS XE Software (17.4.2) - Cisco — Cisco IOS XE Software (17.4.1a) - Cisco — Cisco IOS XE Software (17.4.1b) - Cisco — Cisco IOS XE Software (17.4.2a) - Cisco — Cisco IOS XE Software (17.5.1) - Cisco — Cisco IOS XE Software (17.5.1a) - Cisco — Cisco IOS XE Software (17.6.1) - Cisco — Cisco IOS XE Software (17.6.1w) - Cisco — Cisco IOS XE Software (17.6.1a) - Cisco — Cisco IOS XE Software (17.6.1x) - Cisco — Cisco IOS XE Software (17.6.3) - Cisco — Cisco IOS XE Software (17.6.1y) - Cisco — Cisco IOS XE Software (17.6.1z) - Cisco — Cisco IOS XE Software (17.6.3a) - Cisco — Cisco IOS XE Software (17.6.4) - Cisco — Cisco IOS XE Software (17.6.1z1) - Cisco — Cisco IOS XE Software (17.6.5) - Cisco — Cisco IOS XE Software (17.6.6) - Cisco — Cisco IOS XE Software (17.6.6a) - Cisco — Cisco IOS XE Software (17.6.5a) - Cisco — Cisco IOS XE Software (17.6.7) - Cisco — Cisco IOS XE Software (17.6.8) - Cisco — Cisco IOS XE Software (17.6.8a) - Cisco — Cisco IOS XE Software (17.7.1) - Cisco — Cisco IOS XE Software (17.7.1a) - Cisco — Cisco IOS XE Software (17.7.1b) - Cisco — Cisco IOS XE Software (17.7.2) - Cisco — Cisco IOS XE Software (17.10.1) - Cisco — Cisco IOS XE Software (17.10.1a) - Cisco — Cisco IOS XE Software (17.10.1b) - Cisco — Cisco IOS XE Software (17.8.1) - Cisco — Cisco IOS XE Software (17.8.1a) - Cisco — Cisco IOS XE Software (17.9.1) - Cisco — Cisco IOS XE Software (17.9.1w) - Cisco — Cisco IOS XE Software (17.9.2) - Cisco — Cisco IOS XE Software (17.9.1a) - Cisco — Cisco IOS XE Software (17.9.1x) - Cisco — Cisco IOS XE Software (17.9.1y) - Cisco — Cisco IOS XE Software (17.9.3) - Cisco — Cisco IOS XE Software (17.9.2a) - Cisco — Cisco IOS XE Software (17.9.1x1) - Cisco — Cisco IOS XE Software (17.9.3a) - Cisco — Cisco IOS XE Software (17.9.4) - Cisco — Cisco IOS XE Software (17.9.1y1) - Cisco — Cisco IOS XE Software (17.9.5) - Cisco — Cisco IOS XE Software (17.9.4a) - Cisco — Cisco IOS XE Software (17.9.5a) - Cisco — Cisco IOS XE Software (17.9.5b) - Cisco — Cisco IOS XE Software (17.9.6) - Cisco — Cisco IOS XE Software (17.9.6a) - Cisco — Cisco IOS XE Software (17.9.7) - Cisco — Cisco IOS XE Software (17.9.5e) - Cisco — Cisco IOS XE Software (17.9.5f) - Cisco — Cisco IOS XE Software (17.9.8) - Cisco — Cisco IOS XE Software (17.9.7a) - Cisco — Cisco IOS XE Software (17.9.7b) - Cisco — Cisco IOS XE Software (17.11.1) - Cisco — Cisco IOS XE Software (17.11.1a) - Cisco — Cisco IOS XE Software (17.12.1) - Cisco — Cisco IOS XE Software (17.12.1w) - Cisco — Cisco IOS XE Software (17.12.1a) - Cisco — Cisco IOS XE Software (17.12.1x) - Cisco — Cisco IOS XE Software (17.12.2) - Cisco — Cisco IOS XE Software (17.12.3) - Cisco — Cisco IOS XE Software (17.12.2a) - Cisco — Cisco IOS XE Software (17.12.1y) - Cisco — Cisco IOS XE Software (17.12.1z) - Cisco — Cisco IOS XE Software (17.12.4) - Cisco — Cisco IOS XE Software (17.12.3a) - Cisco — Cisco IOS XE Software (17.12.1z1) - Cisco — Cisco IOS XE Software (17.12.1z2) - Cisco — Cisco IOS XE Software (17.12.4a) - Cisco — Cisco IOS XE Software (17.12.5) - Cisco — Cisco IOS XE Software (17.12.4b) - Cisco — Cisco IOS XE Software (17.12.1z3) - Cisco — Cisco IOS XE Software (17.12.5a) - Cisco — Cisco IOS XE Software (17.12.1z4) - Cisco — Cisco IOS XE Software (17.12.6) - Cisco — Cisco IOS XE Software (17.12.5b) - Cisco — Cisco IOS XE Software (17.12.5c) - Cisco — Cisco IOS XE Software (17.12.6a) - Cisco — Cisco IOS XE Software (17.12.5d) - Cisco — Cisco IOS XE Software (17.12.6b) - Cisco — Cisco IOS XE Software (17.13.1) - Cisco — Cisco IOS XE Software (17.13.1a) - Cisco — Cisco IOS XE Software (17.14.1) - Cisco — Cisco IOS XE Software (17.14.1a) - Cisco — Cisco IOS XE Software (17.15.1) - Cisco — Cisco IOS XE Software (17.15.1w) - Cisco — Cisco IOS XE Software (17.15.1a) - Cisco — Cisco IOS XE Software (17.15.2) - Cisco — Cisco IOS XE Software (17.15.1b) - Cisco — Cisco IOS XE Software (17.15.1x) - Cisco — Cisco IOS XE Software (17.15.1z) - Cisco — Cisco IOS XE Software (17.15.3) - Cisco — Cisco IOS XE Software (17.15.2c) - Cisco — Cisco IOS XE Software (17.15.2a) - Cisco — Cisco IOS XE Software (17.15.1y) - Cisco — Cisco IOS XE Software (17.15.2b) - Cisco — Cisco IOS XE Software (17.15.3a) - Cisco — Cisco IOS XE Software (17.15.4) - Cisco — Cisco IOS XE Software (17.15.3b) - Cisco — Cisco IOS XE Software (17.15.4d) - Cisco — Cisco IOS XE Software (17.15.4e) - Cisco — Cisco IOS XE Software (17.16.1) - Cisco — Cisco IOS XE Software (17.16.1a) - Cisco — Cisco IOS XE Software (17.17.1) - Cisco — Cisco IOS XE Software (17.18.1) - Cisco — Cisco IOS XE Software (17.18.1w) - Cisco — Cisco IOS XE Software (17.18.1a) ## References - [CNA](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-scp-dos-duAdXtCg) ## Exploitation Prediction (EPSS) - **EPSS Score:** 0.09% - **EPSS Percentile:** 0.6 --- _Exported from OnDuty AI Vulnerability Intelligence on 2026-09-12._