Security readout for executives and security teams
Plain-English summary
An authenticated user of affected Cisco security appliances could see passwords that the management interface tried to hide. The issue is limited to confidentiality, but exposed passwords can enable follow-on access if reused or highly privileged.
Executive priority
Treat this as a targeted credential exposure risk, not a mass unauthenticated compromise. Prioritize appliances with broad management access, many administrators, or reused privileged passwords.
Technical view
CVE-2020-3547 is a CWE-200 information disclosure flaw in Cisco AsyncOS web-based management interfaces for ESA, SMA, and WSA. Certain passwords were masked insecurely, allowing an authenticated remote user to obtain configured passwords from interface content. CVSS is 4.3, with network access, low complexity, and low privileges required.
Likely exposure
Exposure is most likely where Cisco ESA, SMA, or WSA management interfaces are reachable by authenticated users, especially shared admin teams, delegated operators, or compromised low-privilege accounts.
Exploitation context
The source bundle does not show KEV listing or active exploitation. Exploitation requires authentication and access to the web management interface, reducing internet-scale risk but increasing insider and credential-compromise relevance.
Researcher notes
Evidence supports authenticated information disclosure only. The provided sources do not include fixed version details, workaround specifics, public exploit status, or proof of active exploitation.
Mitigation direction
- Check Cisco’s advisory for affected and fixed AsyncOS release guidance.
- Restrict management interface access to trusted admin networks or VPNs.
- Review and reduce user privileges on appliance management accounts.
- Rotate passwords that may have been exposed after remediation.
- Monitor management logins and configuration access for unusual activity.
Validation and detection
- Inventory Cisco ESA, SMA, and WSA appliances in use.
- Identify AsyncOS versions and compare them with Cisco advisory guidance.
- Confirm management interfaces are not broadly reachable.
- Review who has authenticated access to the web management interface.
- Assess whether sensitive configured passwords require rotation.
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-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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-2020-3547 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
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20200902 Cisco Email Security Appliance, Cisco Content Security Management Appliance, and Cisco Web Security Appliance Information Disclosure 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.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.