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TI-2019-09456 Aliases CVE-2019-12660GHSA-xq77-4xgj-83fm

Cisco IOS XE Software ASIC Register Write Vulnerability

Priority LOW 25CWE-668Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker to write values to the underlying memory of an affected device. The vulnerability is due to improper input validation and authorization of specific commands that a user can execute within the CLI. An attacker could exploit this vulnerability by authenticating to an affected device and issuing a specific set of commands. A successful exploit could allow the attacker to modify the configuration of the device to cause it to be non-secure and abnormally functioning.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00302 23rd 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
Partial

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 Software 3.2.11aSGall versions—No fix listedCNA
  • Cisco IOS XE Software 3.2.11aSG VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*16.1.1VulnerableCisco
  • cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* Versions 16.1.1 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Cisco IOS XE Software 3.2.11aSG n/a

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2019-09466 Cisco IOS XE Software IOx Guest Shell Namespace Protection VulnerabilityPriority LOW 31
    • TI-2019-09445 Cisco IOS XE Software Digital Signature Verification Bypass VulnerabilityPriority LOW 31
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-12660
  2. 2026-10-03 Alias added: GHSA-xq77-4xgj-83fm

References

Advisory 1

  • TI-2023-06904 Cisco is providing an update for the ongoing investigation into observed exploitation of… KEVCVSS 3.1CRITICAL 10.0
  • TI-2018-00122 Memory corruption 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-2017-04498 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
  • TI-2017-04497 Memory corruption in Cisco IOS XE Software KEVCVSS 3.1HIGH 8.8
See all 561 →

Sources

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