Security readout for executives and security teams
Plain-English summary
CVE-2020-26077 lets a logged-in remote user of Cisco IoT Field Network Director view user lists belonging to other configured domains. This is a data-separation failure, not a system takeover. The main business concern is unauthorized visibility into account information across operational domains.
Executive priority
Schedule remediation through normal vulnerability management unless IoT-FND is internet-exposed, widely accessible, or used across sensitive operational domains. The issue can expose user information across domains but does not indicate code execution or service disruption.
Technical view
Cisco IoT-FND has improper access control in user-list handling. An authenticated remote attacker could send an API request that changes the domain used for a requested user list, allowing visibility into users from other domains. CVSS is 5.0: network reachable, low complexity, low privileges, no user interaction, low confidentiality impact, no integrity or availability impact.
Likely exposure
Exposure is limited to organizations running Cisco IoT Field Network Director, especially where multiple domains are configured. The attacker must already have authenticated access to the affected system. The source bundle does not provide exact affected versions or CPEs.
Exploitation context
The CVE source describes a remote authenticated API abuse path. It does not show public exploit code, exploitation in the wild, or CISA KEV listing. Treat active exploitation as unconfirmed based on the provided evidence.
Researcher notes
Evidence supports CWE-284 improper access control with low confidentiality impact. Version detail is incomplete in the supplied bundle. Do not assume unauthenticated exposure, broader Cisco product impact, or active exploitation without additional vendor or threat-intelligence evidence.
Mitigation direction
- Review Cisco's advisory for affected releases, fixed software, or documented workarounds.
- Limit Cisco IoT-FND access to authorized administrative users and trusted networks.
- Review domain separation and least-privilege roles for IoT-FND accounts.
- Monitor vendor guidance because the source bundle does not name a specific fix.
Validation and detection
- Inventory Cisco IoT-FND deployments and compare them with Cisco's advisory.
- Identify systems with multiple configured domains and authenticated API access.
- Review logs for unusual authenticated user-list access across domains.
- Confirm whether current software is covered by Cisco fixed-release guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-26077 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N3.11.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5MediumVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20201118 Cisco IoT Field Network Director Improper Access Control VulnerabilityCVE reference · vendor-advisory, x_refsource_CISCO
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.