Security readout for executives and security teams
Plain-English summary
OpenBMCS 2.4 has a cross-site request forgery issue in sendFeedback.php. If an administrator is tricked into interacting with a malicious request while logged in, unintended actions may occur, including sending emails or changing settings. This is not listed as known exploited in CISA KEV, but a public Exploit-DB entry exists.
Executive priority
Treat as a moderate-priority web application risk. Prioritize if OpenBMCS 2.4 supports business-critical operations, is internet-facing, or has many administrators. The main concern is unauthorized integrity changes triggered through administrator interaction.
Technical view
CVE-2021-47702 is CWE-352 in OpenBMCS 2.4. The CVSS 4.0 score is 5.3 with network attack vector, low complexity, no privileges required by the attacker, and user interaction required. Reported impact is low integrity impact through the sendFeedback.php endpoint; confidentiality and availability impacts are not indicated.
Likely exposure
Exposure is limited to organizations running OpenBMCS version 2.4, especially where administrators use the web interface. Risk increases if admin sessions are reachable from general user networks or the internet.
Exploitation context
Sources include a public Exploit-DB reference, so proof-of-concept information appears public. The provided data does not show active exploitation, and the CVE is not marked as CISA KEV.
Researcher notes
The bundle names OpenBMCS 2.4 only. No official patch version is provided in the supplied sources. Public references include Zero Science Lab, VulnCheck, and Exploit-DB. Avoid assuming broader version impact without vendor confirmation.
Mitigation direction
- Identify any OpenBMCS 2.4 instances in the environment.
- Check OpenBMCS or vendor guidance for a fixed version or official workaround.
- Restrict administrative interface access to trusted users and networks where feasible.
- Train administrators to avoid untrusted links while authenticated to OpenBMCS.
- Monitor for unexpected feedback emails or unauthorized configuration changes.
Validation and detection
- Confirm whether OpenBMCS is deployed and record its version.
- Determine whether version 2.4 is present.
- Verify whether sendFeedback.php is accessible in deployed instances.
- Review administrative activity for unexpected emails or settings changes.
- Check vendor and advisory pages for updated remediation 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-352: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2021-47702 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 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA: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:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
5.3MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-50667CVE reference · exploit
- Official Product HomepageCVE reference · product
- Zero Science Lab Disclosure (ZSL-2022-5691)CVE reference · third-party-advisory
- VulnCheck Advisory: OpenBMCS Cross Site Request Forgery (CSRF) via sendFeedback.phpCVE reference · third-party-advisory
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.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.