Security readout for executives and security teams
Plain-English summary
This CVE affects a specific Reolink RLC-410W camera firmware build. A logged-in network attacker could trigger a firmware-upgrade preparation function with unsafe default permission handling. The documented impact is limited integrity loss and high availability impact, so disruption is the main business concern.
Executive priority
Treat as high priority for environments using the named camera firmware, especially where cameras support physical security or operations. The main risk is service disruption, not confirmed data theft. Act through inventory, exposure reduction, and vendor firmware review.
Technical view
Talos describes incorrect default permissions in cgiserver.cgi cgi_check_ability for UpgradePrepare on Reolink RLC-410W v3.0.0.136_20121102. The issue is network reachable, low complexity, requires low privileges, and does not require user interaction. CVSS 3.0 is 7.1 high.
Likely exposure
Exposure is most relevant where the named Reolink RLC-410W firmware is deployed and its HTTP management interface is reachable by authenticated low-privilege users over a network. The CVE affected-product metadata is incomplete, listing vendor and product as n/a despite the description naming Reolink RLC-410W.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. The described attack path requires an HTTP request from a low-privilege authenticated attacker. Do not assume internet-wide exploitation from the provided evidence.
Researcher notes
Evidence is narrow: the CVE description and Talos reference identify one Reolink model and firmware build, while structured affected fields are not populated. CVSS indicates low-privilege network attack with high availability impact. No source in the bundle confirms a patch, workaround, or exploitation in the wild.
Mitigation direction
- Check Reolink and Talos guidance for fixed firmware or vendor remediation.
- Restrict camera management interfaces to trusted administrative networks.
- Remove unnecessary low-privilege accounts on affected cameras.
- Prioritize replacement or isolation if no supported fix is available.
- Monitor for unexpected firmware-upgrade preparation activity.
Validation and detection
- Inventory Reolink RLC-410W cameras and record firmware versions.
- Confirm whether v3.0.0.136_20121102 is present.
- Verify management HTTP interfaces are not publicly reachable.
- Review account privileges for camera users.
- Check logs for unusual upgrade-related requests or failures.
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-2021-40413 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
- High
- CVSS
- 7.1 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
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:U/C:N/I:L/A:H2.84.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.1HighVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1425CVE 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.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.