Security readout for executives and security teams
Plain-English summary
OpenWrt 21.02.1 is reported to allow cross-site scripting through the Traffic Rules Name screen. This could let unsafe input execute in a user's browser when viewing that area. The public record is sparse, so business urgency depends on whether affected OpenWrt administration screens are reachable by untrusted users.
Executive priority
Address during normal vulnerability maintenance unless the management interface is exposed or shared with untrusted users. Escalate if OpenWrt administration is reachable from the internet or by non-administrators.
Technical view
The CVE describes XSS in OpenWrt 21.02.1 via the Traffic Rules Name screen. The provided sources do not include CVSS, CWE, CPE data, exploit details, authentication requirements, or fixed-version information. Treat this as an input handling issue in the OpenWrt management workflow pending vendor confirmation.
Likely exposure
Likely limited to OpenWrt 21.02.1 systems where someone can create or display Traffic Rules names. Exposure is higher if the management interface is reachable by untrusted users or shared administrators.
Exploitation context
CISA KEV is false, and the provided sources do not report active exploitation. The sources also do not establish whether exploitation requires authentication, administrator access, or user interaction.
Researcher notes
Evidence is limited to the CVE description and OpenWrt bug reference. No CVSS, CWE, CPE, exploit status, or fixed release is provided in the source bundle, so scope and remediation should be verified against OpenWrt advisories.
Mitigation direction
- Check OpenWrt vendor guidance for fixed versions or recommended workarounds.
- Restrict OpenWrt management access to trusted networks and administrators.
- Upgrade affected OpenWrt 21.02.1 devices when a vendor-supported fix is available.
- Review firewall rule names for suspicious or unexpected script-like content.
Validation and detection
- Inventory OpenWrt devices and identify any running version 21.02.1.
- Confirm whether Traffic Rules management screens are accessible from untrusted networks.
- Review the OpenWrt bug tracker entry for fix status and affected scope.
- Check security monitoring for unusual administrator-session activity around configuration changes.
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.
CVE-2021-45905 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://bugs.openwrt.org/index.php?do=details&task_id=4199CVE reference · x_refsource_MISC
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.