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TI-2019-01381 Aliases CVE-2019-1756GHSA-c5vj-536j-jp5v

Cisco IOS XE Software Command Injection Vulnerability

Priority MEDIUM 40CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA.

Summary

A vulnerability in Cisco IOS XE Software could allow an authenticated, remote attacker to execute commands on the underlying Linux shell of an affected device with root privileges. The vulnerability occurs because the affected software improperly sanitizes user-supplied input. An attacker who has valid administrator access to an affected device could exploit this vulnerability by supplying a username with a malicious payload in the web UI and subsequently making a request to a specific endpoint in the web UI. A successful exploit could allow the attacker to run arbitrary commands as the root user, allowing complete compromise of the system.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03698 89th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco IOS XE Software3.2.0JA; 16.7.1; 16.7.1a; 16.7.1b; 16.7.2; 16.7.3; 16.8.1; 16.8.1a; 16.8.1b; 16.8.1s; 16.8.1c; 16.8.1d; 16.8.2; 16.8.1e—No fix listedCNA
  • Cisco IOS XE Software VendorCisco Affected 3.2.0JA; 16.7.1; 16.7.1a; 16.7.1b; 16.7.2; 16.7.3; 16.8.1; 16.8.1a; 16.8.1b; 16.8.1s; 16.8.1c; 16.8.1d; 16.8.2; 16.8.1e Fixed in — No fix listed CNA

CPE configurations NVD · 16

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios:11.0\(20.3\):*:*:*:*:*:*:*11.0(20.3)VulnerableCisco
cpe:2.3:o:cisco:ios:16.9\(1\):*:*:*:*:*:*:*16.9(1)VulnerableCisco
cpe:2.3:o:cisco:ios_xe:3.2.0ja:*:*:*:*:*:*:*3.2.0jaVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.7.1:*:*:*:*:*:*:*16.7.1VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.7.1a:*:*:*:*:*:*:*16.7.1aVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.7.1b:*:*:*:*:*:*:*16.7.1bVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.7.2:*:*:*:*:*:*:*16.7.2VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.7.3:*:*:*:*:*:*:*16.7.3VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.8.1:*:*:*:*:*:*:*16.8.1VulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.8.1a:*:*:*:*:*:*:*16.8.1aVulnerableCisco
  • cpe:2.3:o:cisco:ios:11.0\(20.3\):*:*:*:*:*:*:* Versions 11.0(20.3) Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios:16.9\(1\):*:*:*:*:*:*:* Versions 16.9(1) Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:3.2.0ja:*:*:*:*:*:*:* Versions 3.2.0ja Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.7.1:*:*:*:*:*:*:* Versions 16.7.1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.7.1a:*:*:*:*:*:*:* Versions 16.7.1a Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.7.1b:*:*:*:*:*:*:* Versions 16.7.1b Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.7.2:*:*:*:*:*:*:* Versions 16.7.2 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.7.3:*:*:*:*:*:*:* Versions 16.7.3 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1:*:*:*:*:*:*:* Versions 16.8.1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1a:*:*:*:*:*:*:* Versions 16.8.1a Vulnerable ·Cisco
Show 6 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios_xe:16.8.1b:*:*:*:*:*:*:*16.8.1bVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.8.1c:*:*:*:*:*:*:*16.8.1cVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.8.1d:*:*:*:*:*:*:*16.8.1dVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.8.1e:*:*:*:*:*:*:*16.8.1eVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.8.1s:*:*:*:*:*:*:*16.8.1sVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.8.2:*:*:*:*:*:*:*16.8.2VulnerableCisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1b:*:*:*:*:*:*:* Versions 16.8.1b Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1c:*:*:*:*:*:*:* Versions 16.8.1c Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1d:*:*:*:*:*:*:* Versions 16.8.1d Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1e:*:*:*:*:*:*:* Versions 16.8.1e Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.8.1s:*:*:*:*:*:*:* Versions 16.8.1s Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.8.2:*:*:*:*:*:*:* Versions 16.8.2 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-1756
  2. 2026-10-03 Alias added: GHSA-c5vj-536j-jp5v

References

Patch 1

  • TI-2018-00138 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-09019 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-02977 Improper input validation in Cisco IOS and IOS XE Software KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
  • TI-2017-04499 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
  • TI-2017-04498 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
See all 617 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences