EUVD-2026-62568
GHSA-cjg6-c7q5-6vpx
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessObtain valid low-privilege Secure Workload account
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DeliveryReach network-accessible platform interface
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ExploitSubmit crafted malformed input (CWE-20)
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ExecutionBypass input validation with scope change
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ImpactCorrupt integrity and disrupt availability of affected components
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
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| Exploitation Conditions | Exploitation requires network reachability to a vulnerable Cisco Secure Workload interface AND a valid authenticated account holding at least low-level privileges (CVSS PR:L) - this is not an unauthenticated flaw, so an attacker must first possess or obtain credentials/session on the platform. No user interaction is required (UI:N) and attack complexity is low (AC:L), meaning that once authenticated the malformed input can be delivered directly without special timing or victim participation. Limiting factors: the authentication requirement narrows the attacker population to insiders or those who have already breached credentials, and the specific vulnerable input paths were internally discovered by Cisco and not publicly detailed, so the exact feature/endpoint required is not disclosed in available data. The precise affected sub-feature is not specified in the CVE description beyond the CWE-20 improper-input-validation class. |
| Impact | The signals are mixed and warrant careful reading rather than reflexive escalation. The vendor CVSS 3.1 base score is 9.6 (AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H), which is critical primarily because of the Changed scope combined with High integrity and availability impact - notably confidentiality impact is rated None (C:N), yet the intel tags include 'Information Disclosure', a conflict that should be verified against the Cisco advisory before treating data exposure as in-scope. No EPSS score, KEV listing, or POC was provided, so real-world exploitation pressure is currently unquantified; the absence of KEV and public exploit suggests this is not yet subject to opportunistic mass exploitation. Crucially, exploitation requires PR:L - the attacker must already hold some authenticated privilege on the platform - which meaningfully constrains the population of attackers and points toward insider or post-compromise abuse rather than pure internet-facing drive-by attacks. On balance this is a genuine high-priority patch for organizations running Secure Workload given the 9.6 score and scope change, but the low-privilege prerequisite and lack of exploitation evidence place it in the 'patch promptly during normal cycles' tier rather than 'emergency out-of-band' unless an operator exposes the management plane to untrusted authenticated users. |
| Exploit ScenarioDerived | An attacker who has obtained a valid low-privilege Secure Workload account - for example through phished operator credentials or lateral movement from another compromised system - sends crafted, malformed input to a network-accessible interface that fails to validate it properly. Because no user interaction is needed and attack complexity is low, the attacker reliably corrupts processing to degrade integrity and availability, and the Changed scope means the impact can extend to components beyond the initially targeted one. No public proof-of-concept is known at time of analysis. |
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Alert meAnalysisAIv1 – Aug 19, 2026
Integrity and availability compromise in Cisco Secure Workload allows an authenticated, remote attacker to abuse improper input validation (CWE-20) across multiple internally discovered flaws fixed in a single hardening release. Because the CVSS scope is Changed, successful exploitation can impact components beyond the initially vulnerable one. No public exploit has been identified at time of analysis, and the issue is not listed in CISA KEV; it was discovered and reported internally by Cisco.
RemediationAI
Patch available per vendor advisory: Cisco addressed these issues in a Secure Workload software hardening release, so upgrade to the fixed build identified in the Cisco Security Advisory at https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-csw1-shSvndWP (no exact fix version was included in the available intel - obtain it from that advisory). Because exploitation requires an authenticated low-privilege account (PR:L), the most effective compensating control while scheduling the upgrade is to tighten who can authenticate to the platform: restrict management/UI and API access to a trusted administrative network segment or jump host, enforce least-privilege RBAC so operator accounts hold only the roles they need, and audit existing local and federated accounts for stale or over-privileged access. Trade-off: network restriction of the management plane may disrupt remote administration or automation integrations, so validate API client source addresses before locking down. Monitor platform audit logs for anomalous input to affected interfaces as a detection backstop.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
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Technical ContextAI · show details
Cisco Secure Workload (formerly Tetration) is an enterprise micro-segmentation and workload-protection platform that ingests telemetry from agents across data-center and cloud workloads to enforce zero-trust segmentation policy. The root cause is classed as CWE-20 (Improper Input Validation): the application accepts externally supplied data without adequately constraining its form or content, allowing malformed input to alter processing. CVE-2026-20318 is explicitly a grouping of multiple such input-validation defects addressed together in a hardening release rather than a single isolated bug. The CPE cpe:2.3:a:cisco:cisco_secure_workload:*:*:*:*:*:*:*:* confirms the affected component is the Secure Workload application itself across a broad version range.
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
Network-reachable but requires an authenticated low-privilege account (PR:L); Changed scope and High integrity/availability impact, with no confidentiality impact per vendor (C:N), aligning with the disclosed vector.
Primary rating from Vendor (cisco).
CVSS VectorVendor: cisco
DescriptionCVE.org
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload 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 tracked by CVE-2026-20318 are related to improper input validation issues that are grouped under the Common Weakness Enumeration (CWE) CWE-20.
Executive ViewAI
Cisco Secure Workload contains a CRITICAL vulnerability (CVSS 9.6) allowing authenticated attackers to compromise data integrity and system availability. With no vendor patch currently available, organizations operating this platform face immediate operational risk. The vulnerability's expanded scope means a successful attack could spread beyond the targeted component to impact other systems or data.
No vendor-released patch identified at time of analysis. Interim mitigations: enforce network segmentation and firewall rules to limit Secure Workload access to authorized personnel only; mandate multi-factor authentication for all accounts; implement comprehensive audit logging to detect integrity tampering or unauthorized state changes; restrict and monitor service account access to essential operations only; and establish continuous monitoring for indicators of compromise (unexpected configuration changes, privilege escalation, lateral movement attempts).
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
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