Security Resilience

CVE-2023-20100

Cisco Ios Xe 17.10.1

Published
23 March 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 6.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS Score 0.0077 55th percentile
Risk Priority 52 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-20100 is a medium-severity Use of Multiple Resources with Duplicate Identifier (CWE-694) vulnerability in Cisco Ios Xe. Its CVSS base score is 6.8 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Protocol or Service Impersonation (T1001.003); ranked in the top 45% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

A vulnerability in the access point (AP) joining process of the Control and Provisioning of Wireless Access Points (CAPWAP) protocol of Cisco IOS XE Software for Wireless LAN Controllers (WLCs) could allow an unauthenticated, remote attacker to cause a denial…

more

of service (DoS) condition on an affected device. This vulnerability is due to a logic error that occurs when certain conditions are met during the AP joining process. An attacker could exploit this vulnerability by adding an AP that is under their control to the network. The attacker then must ensure that the AP successfully joins an affected wireless controller under certain conditions. Additionally, the attacker would need the ability to restart a valid AP that was previously connected to the controller. A successful exploit could allow the attacker to cause the affected device to restart unexpectedly, resulting in a DoS condition.

CWE(s)
CWE-694NVD-CWE-noinfo

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.003 Protocol or Service Impersonation Command And Control
Adversaries may impersonate legitimate protocols or web service traffic to disguise command and control activity and thwart analysis efforts.
attack.mitre.org →
T1003 OS Credential Dumping Credential Access
Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.
attack.mitre.org →
T1003.001 LSASS Memory Credential Access
Adversaries may attempt to access credential material stored in the process memory of the Local Security Authority Subsystem Service (LSASS).
attack.mitre.org →
T1003.002 Security Account Manager Credential Access
Adversaries may attempt to extract credential material from the Security Account Manager (SAM) database either through in-memory techniques or through the Windows Registry where the SAM database is stored.
attack.mitre.org →
T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
attack.mitre.org →
T1003.007 Proc Filesystem Credential Access
Adversaries may gather credentials from the proc filesystem or `/proc`.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-20140Same product: Cisco Catalyst 9800-40
CVE-2025-20190Same product: Cisco Catalyst 9800-40
CVE-2024-20303Same product: Cisco Catalyst 9800-40
CVE-2023-20202Same product: Cisco Catalyst 9800-40
CVE-2023-20231Same product: Cisco Catalyst 9800
CVE-2026-20004Same product: Cisco Ios Xe
CVE-2024-20324Same product: Cisco Ios Xe
CVE-2025-20338Same product: Cisco Ios Xe
CVE-2025-20201Same product: Cisco Ios Xe
CVE-2026-20272Same product: Cisco Ios Xe

Affected Assets

cisco
ios xe
17.10.1

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V8.4.1
  • V3.5.4
  • V6.8.1
  • V9.2.4

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

ID.AM-02 partial match
blocks

Maintaining software/service inventories requires and enforces unique identifiers to avoid collisions.

ID.AM-08 partial match
blocks

Lifecycle management of assets includes identifier uniqueness as a supporting practice.

PR.AA-01 partial match
blocks

Managing identities and credentials for users/services/hardware directly requires unique identifiers.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.16 Identity management partial match
blocks

A.5.16(e) directly requires avoiding duplicate identities in one domain (the exact condition CWE-694 names), and (a)-(c) further constrain identity issuance to prevent the duplicate-identifier situation from arising; this stops exploitation in the identity-management slice of the weakness but leaves other resource types (non-identity) and cross-domain cases untouched.

A.5.24 Information security incident management planning and preparation partial match
removes
A.8.14 Redundancy of information processing facilities partial match
removes
A.8.25 Secure development life cycle partial match
blocks

Secure development lifecycle practices can catch duplicate-ID issues during design and code review.

A.8.26 Application security requirements partial match
removes
A.8.27 Secure system architecture and engineering principles partial match
removes

References