Description

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Crosswork engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities trackled by CVE-2026-20359 are related to insufficiently protected credentials issues that are grouped under the Common Weakness Enumeration (CWE) CWE-522.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "9.9",
  "pubDate": "2026-08-19T17:18:40.943Z",
  "pubdate": "2026-08-19T17:18:40.943Z",
  "executiveSummary": "An internal security review conducted by the Cisco Crosswork engineering team identified multiple internally discovered vulnerabilities within Cisco Crosswork products. Specifically, the issues tracked by CVE-2026-20359 pertain to insufficiently protected credentials classified under Common Weakness Enumeration CWE-522. This vulnerability class typically arises when sensitive authentication data, such as passwords, tokens, or cryptographic keys, is handled, stored, or transmitted without adequate cryptographic protection or obfuscation, exposing it to unauthorized actors.\nThe primary impact of CWE-522 within Cisco Crosswork involves the potential exposure of sensitive credential material to unauthorized users or processes with access to the underlying storage mechanisms, configuration files, or memory spaces. If successfully exploited, an attacker with sufficient visibility into the vulnerable system could harvest these credentials to facilitate unauthorized access, lateral movement, or privilege escalation across dependent components and integrated management domains.\nThe affected product scope is limited to Cisco Crosswork versions addressed by the corresponding software hardening release. Exploitation of the vulnerability generally requires an attacker to possess prior local or environmental access to the targeted system components where the credentials are insufficiently protected, depending on the exact exposure vector. Remediation requires applying the official software hardening release provided by Cisco to ensure proper credential handling and adherence to secure development standards.",
  "technicalDetails": "The vulnerability designated as CVE-2026-20359 is rooted in insufficiently protected credentials, formally categorized under CWE-522. In enterprise software architectures like Cisco Crosswork, authentication credentials must be rigorously protected throughout their lifecycle, including at rest, in transit, and during internal processing. The root cause of this vulnerability stems from deficient implementation in how sensitive credentials are managed, stored, or handled by the application logic, leading to scenarios where authentication data may be exposed in plaintext or with inadequate cryptographic wrapping.\nFrom an architectural standpoint, the vulnerable component resides within the credential management subsystem of Cisco Crosswork. When the application interacts with internal databases, configuration repositories, or state files, it fails to enforce robust encryption standards or secure hashing algorithms for sensitive authentication artifacts. Consequently, processes or users possessing read permissions to the storage media, configuration stores, or memory segments where these artifacts reside can extract the unprotected credentials.\nThe step-by-step attack flow typically begins with the adversary establishing an initial access vector into the environment or obtaining localized execution privileges on the target host or container running Cisco Crosswork. Once positioned, the attacker targets the vulnerable component where credential data is handled or persisted. By leveraging the inadequate protection mechanisms defined by CWE-522, the adversary reads the insufficiently protected credential strings directly from the affected files, database tables, or process memory. Post-exploitation impact involves utilizing the harvested credentials to authenticate legitimately against internal APIs, upstream services, or external integrations, effectively bypassing intended security controls and potentially compromising the broader management plane administered by Cisco Crosswork.\nThe vulnerability affects specific software releases of Cisco Crosswork prior to the deployment of the vendor's software hardening release. Authentication and privilege requirements for exploitation depend on the specific access vector required to reach the vulnerable storage or handling mechanism, but typically assume an attacker with localized system visibility or internal access capable of inspecting the insecurely handled data assets."
}