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TI-2025-14455 Aliases CVE-2025-20155GHSA-5jcx-7jcf-9fw2

A vulnerability in the bootstrap loading of Cisco IOS XE Software could allow an…

Priority LOW 28CWE-1287Published · Updated

Key facts

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

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

Summary

A vulnerability in the bootstrap loading of Cisco IOS XE Software could allow an authenticated, local attacker to write arbitrary files to an affected system. This vulnerability is due to insufficient input validation of the bootstrap file that is read by the system software when a device is first deployed in SD-WAN mode or when an administrator configures SD-Routing on the device. An attacker could exploit this vulnerability by modifying a bootstrap file generated by Cisco Catalyst SD-WAN Manager, loading it into the device flash, and then either reloading the device in a green field deployment in SD-WAN mode or configuring the device with SD-Routing. A successful exploit could allow the attacker to perform arbitrary file writes to the underlying operating system.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00174 6th 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 Software17.9.4; 17.9.5; 17.9.4a; 17.9.5a; 17.9.5b; 17.9.6; 17.9.6a; 17.9.5e; 17.9.5f; 17.12.1; 17.12.1w; 17.12.1a; 17.12.1x; 17.12.2; 17.12.3; 17.12.2a; 17.12.1y; 17.12.1z; 17.12.4; 17.12.3a; 17.12.1z1; 17.12.4a; 17.12.4b; 17.13.1; 17.13.1a; 17.14.1; 17.14.1a; 17.11.99SW—No fix listedCNA
  • Cisco IOS XE Software VendorCisco Affected 17.9.4; 17.9.5; 17.9.4a; 17.9.5a; 17.9.5b; 17.9.6; 17.9.6a; 17.9.5e; 17.9.5f; 17.12.1; 17.12.1w; 17.12.1a; 17.12.1x; 17.12.2; 17.12.3; 17.12.2a; 17.12.1y; 17.12.1z; 17.12.4; 17.12.3a; 17.12.1z1; 17.12.4a; 17.12.4b; 17.13.1; 17.13.1a; 17.14.1; 17.14.1a; 17.11.99SW Fixed in — No fix listed CNA

CPE configurations NVD · 28

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios_xe:17.9.4:*:*:*:*:*:*:*17.9.4VulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.9.4a:*:*:*:*:*:*:*17.9.4aVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.9.5:*:*:*:*:*:*:*17.9.5VulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.9.5a:*:*:*:*:*:*:*17.9.5aVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.9.5b:*:*:*:*:*:*:*17.9.5bVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.9.5e:*:*:*:*:*:*:*17.9.5eVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.9.5f:*:*:*:*:*:*:*17.9.5fVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.9.6:*:*:*:*:*:*:*17.9.6VulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.9.6a:*:*:*:*:*:*:*17.9.6aVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.11.99sw:*:*:*:*:*:*:*17.11.99swVulnerableCisco
  • cpe:2.3:o:cisco:ios_xe:17.9.4:*:*:*:*:*:*:* Versions 17.9.4 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.9.4a:*:*:*:*:*:*:* Versions 17.9.4a Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.9.5:*:*:*:*:*:*:* Versions 17.9.5 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.9.5a:*:*:*:*:*:*:* Versions 17.9.5a Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.9.5b:*:*:*:*:*:*:* Versions 17.9.5b Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.9.5e:*:*:*:*:*:*:* Versions 17.9.5e Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.9.5f:*:*:*:*:*:*:* Versions 17.9.5f Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.9.6:*:*:*:*:*:*:* Versions 17.9.6 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.9.6a:*:*:*:*:*:*:* Versions 17.9.6a Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.11.99sw:*:*:*:*:*:*:* Versions 17.11.99sw Vulnerable ·Cisco
Show 18 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios_xe:17.12.1:*:*:*:*:*:*:*17.12.1VulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.12.1a:*:*:*:*:*:*:*17.12.1aVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.12.1w:*:*:*:*:*:*:*17.12.1wVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.12.1x:*:*:*:*:*:*:*17.12.1xVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.12.1y:*:*:*:*:*:*:*17.12.1yVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.12.1z:*:*:*:*:*:*:*17.12.1zVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.12.1z1:*:*:*:*:*:*:*17.12.1z1VulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.12.2:*:*:*:*:*:*:*17.12.2VulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.12.2a:*:*:*:*:*:*:*17.12.2aVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.12.3:*:*:*:*:*:*:*17.12.3VulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.12.3a:*:*:*:*:*:*:*17.12.3aVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.12.4:*:*:*:*:*:*:*17.12.4VulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.12.4a:*:*:*:*:*:*:*17.12.4aVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.12.4b:*:*:*:*:*:*:*17.12.4bVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.13.1:*:*:*:*:*:*:*17.13.1VulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.13.1a:*:*:*:*:*:*:*17.13.1aVulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.14.1:*:*:*:*:*:*:*17.14.1VulnerableCisco
cpe:2.3:o:cisco:ios_xe:17.14.1a:*:*:*:*:*:*:*17.14.1aVulnerableCisco
  • cpe:2.3:o:cisco:ios_xe:17.12.1:*:*:*:*:*:*:* Versions 17.12.1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.12.1a:*:*:*:*:*:*:* Versions 17.12.1a Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.12.1w:*:*:*:*:*:*:* Versions 17.12.1w Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.12.1x:*:*:*:*:*:*:* Versions 17.12.1x Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.12.1y:*:*:*:*:*:*:* Versions 17.12.1y Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.12.1z:*:*:*:*:*:*:* Versions 17.12.1z Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.12.1z1:*:*:*:*:*:*:* Versions 17.12.1z1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.12.2:*:*:*:*:*:*:* Versions 17.12.2 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.12.2a:*:*:*:*:*:*:* Versions 17.12.2a Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.12.3:*:*:*:*:*:*:* Versions 17.12.3 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.12.3a:*:*:*:*:*:*:* Versions 17.12.3a Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.12.4:*:*:*:*:*:*:* Versions 17.12.4 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.12.4a:*:*:*:*:*:*:* Versions 17.12.4a Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.12.4b:*:*:*:*:*:*:* Versions 17.12.4b Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.13.1:*:*:*:*:*:*:* Versions 17.13.1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.13.1a:*:*:*:*:*:*:* Versions 17.13.1a Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.14.1:*:*:*:*:*:*:* Versions 17.14.1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:17.14.1a:*:*:*:*:*:*:* Versions 17.14.1a Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-20155
  2. 2026-10-03 Alias added: GHSA-5jcx-7jcf-9fw2

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