Vulnerability Database

393,392

Total vulnerabilities in the database

CVE-2025-20313 — cisco / ios_xe

Path Traversal: '.../...//'

Multiple vulnerabilities in Cisco IOS XE Software of could allow an authenticated, local attacker with level-15 privileges or an unauthenticated attacker with physical access to the device to execute persistent code at boot time and break the chain of trust.

These vulnerabilities are due path traversal and improper image integrity validation. A successful exploit could allow the attacker to execute persistent code on the underlying operating system.

Because this allows the attacker to bypass a major security feature of the device, Cisco has raised the Security Impact Rating (SIR) of this advisory from Medium to High.

For more information about these vulnerabilities, see the Details ["#details"] section of this advisory.

ERP

  • Published: Sep 24, 2025
  • Updated: Oct 3, 2026
  • CVE: CVE-2025-20313
  • Severity: Medium
  • Exploit:
  • CISA KEV:

CVSS v3:

  • Severity: Medium
  • Score: 6.7
  • AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CWEs:

Software Affected versions
cisco / ios_xe = 17.3.1
cisco / ios_xe = 17.3.1a
cisco / ios_xe = 17.3.1w
cisco / ios_xe = 17.3.1x
cisco / ios_xe = 17.3.1z
cisco / ios_xe = 17.3.2
cisco / ios_xe = 17.3.2a
cisco / ios_xe = 17.3.3
cisco / ios_xe = 17.3.4
cisco / ios_xe = 17.3.4a
cisco / ios_xe = 17.3.4b
cisco / ios_xe = 17.3.4c
cisco / ios_xe = 17.3.5
cisco / ios_xe = 17.3.5a
cisco / ios_xe = 17.3.5b
cisco / ios_xe = 17.3.6
cisco / ios_xe = 17.3.7
cisco / ios_xe = 17.3.8
cisco / ios_xe = 17.3.8a
cisco / ios_xe = 17.4.1
cisco / ios_xe = 17.4.1a
cisco / ios_xe = 17.4.1b
cisco / ios_xe = 17.4.2
cisco / ios_xe = 17.4.2a
cisco / ios_xe = 17.5.1
cisco / ios_xe = 17.5.1a
cisco / ios_xe = 17.6.1
cisco / ios_xe = 17.6.1a
cisco / ios_xe = 17.6.1w
cisco / ios_xe = 17.6.1x
cisco / ios_xe = 17.6.1y
cisco / ios_xe = 17.6.1z
cisco / ios_xe = 17.6.1z1
cisco / ios_xe = 17.6.2
cisco / ios_xe = 17.6.3
cisco / ios_xe = 17.6.3a
cisco / ios_xe = 17.6.4
cisco / ios_xe = 17.6.5
cisco / ios_xe = 17.6.5a
cisco / ios_xe = 17.6.6
cisco / ios_xe = 17.6.6a
cisco / ios_xe = 17.6.7
cisco / ios_xe = 17.6.8
cisco / ios_xe = 17.6.8a
cisco / ios_xe = 17.7.1
cisco / ios_xe = 17.7.1a
cisco / ios_xe = 17.7.1b
cisco / ios_xe = 17.7.2
cisco / ios_xe = 17.8.1
cisco / ios_xe = 17.8.1a
cisco / ios_xe = 17.9.1
cisco / ios_xe = 17.9.1a
cisco / ios_xe = 17.9.1w
cisco / ios_xe = 17.9.1x
cisco / ios_xe = 17.9.1x1
cisco / ios_xe = 17.9.1y
cisco / ios_xe = 17.9.1y1
cisco / ios_xe = 17.9.2
cisco / ios_xe = 17.9.2a
cisco / ios_xe = 17.9.3
cisco / ios_xe = 17.9.3a
cisco / ios_xe = 17.9.4
cisco / ios_xe = 17.9.4a
cisco / ios_xe = 17.9.5
cisco / ios_xe = 17.9.5a
cisco / ios_xe = 17.9.5b
cisco / ios_xe = 17.9.5e
cisco / ios_xe = 17.9.5f
cisco / ios_xe = 17.9.6
cisco / ios_xe = 17.9.6a
cisco / ios_xe = 17.9.7
cisco / ios_xe = 17.9.7a
cisco / ios_xe = 17.9.7b
cisco / ios_xe = 17.10.1
cisco / ios_xe = 17.10.1a
cisco / ios_xe = 17.10.1b
cisco / ios_xe = 17.11.1
cisco / ios_xe = 17.11.1a
cisco / ios_xe = 17.12.1
cisco / ios_xe = 17.12.1a
cisco / ios_xe = 17.12.1w
cisco / ios_xe = 17.12.1x
cisco / ios_xe = 17.12.1y
cisco / ios_xe = 17.12.1z
cisco / ios_xe = 17.12.1z1
cisco / ios_xe = 17.12.1z2
cisco / ios_xe = 17.12.1z3
cisco / ios_xe = 17.12.1z4
cisco / ios_xe = 17.12.2
cisco / ios_xe = 17.12.2a
cisco / ios_xe = 17.12.3
cisco / ios_xe = 17.12.3a
cisco / ios_xe = 17.12.4
cisco / ios_xe = 17.12.4a
cisco / ios_xe = 17.12.4b
cisco / ios_xe = 17.12.5
cisco / ios_xe = 17.12.5a
cisco / ios_xe = 17.12.5b
cisco / ios_xe = 17.12.5c
cisco / ios_xe = 17.13.1
cisco / ios_xe = 17.13.1a
cisco / ios_xe = 17.14.1
cisco / ios_xe = 17.14.1a
cisco / ios_xe = 17.15.1
cisco / ios_xe = 17.15.1a
cisco / ios_xe = 17.15.1b
cisco / ios_xe = 17.15.1w
cisco / ios_xe = 17.15.1x
cisco / ios_xe = 17.15.1y
cisco / ios_xe = 17.15.2
cisco / ios_xe = 17.15.2a
cisco / ios_xe = 17.15.2b
cisco / ios_xe = 17.15.2c
cisco / ios_xe = 17.15.3
cisco / ios_xe = 17.15.3a
cisco / ios_xe = 17.15.3b
cisco / ios_xe = 17.16.1
cisco / ios_xe = 17.16.1a
cisco / ios_xe = 17.17.1

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.