Security readout for executives and security teams
Plain-English summary
MaxBoard has a reported stored XSS and SQL injection issue that could lead to remote code execution, information exposure, and privilege escalation. The CVSS score is high at 8.8. The public record does not identify affected versions or a fixed release, so exposure depends on whether MaxBoard is deployed and reachable.
Executive priority
Treat this as a high-priority exposure if MaxBoard is deployed, especially if reachable from the internet. The main uncertainty is version and patch detail, not severity. Assign ownership quickly and confirm vendor remediation guidance.
Technical view
CVE-2021-26636 combines CWE-79 stored XSS and CWE-89 SQL injection in MaxBoard. The CVSS vector is network-accessible, low complexity, no privileges required, user interaction required, and high impact to confidentiality, integrity, and availability. The source record says this could lead to remote code execution.
Likely exposure
Organizations running MaxBoard are the relevant exposure group. The source bundle lists affected versions as unspecified and provides no CPEs, so asset owners must confirm deployments through inventory, vendor records, and application ownership.
Exploitation context
The provided sources do not state active exploitation, and the CVE is not listed as KEV in the bundle. No exploit status, public proof of concept, or attacker activity should be inferred from the provided evidence.
Researcher notes
Evidence is limited to the CVE description, CVSS vector, CWE mappings, and KRCERT reference. The record does not provide affected version ranges, fixed versions, detailed attack prerequisites beyond user interaction, or exploitation telemetry.
Mitigation direction
- Check the KRCERT and MaxBoard advisory for affected versions and fixed releases.
- Upgrade, patch, disable, or replace MaxBoard according to vendor guidance.
- Restrict MaxBoard access to trusted users and networks until remediation is confirmed.
- Review application logs for suspicious administrative changes or unusual requests.
- Prioritize remediation for internet-facing or business-critical MaxBoard instances.
Validation and detection
- Confirm whether MaxBoard exists in asset inventory or web application catalogs.
- Identify exposed MaxBoard instances and note internet-facing access paths.
- Check installed version details against vendor or KRCERT guidance.
- Verify compensating controls limit access where patch status is unknown.
- Review security monitoring for signs of account misuse or data access anomalies.
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-79: 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 lookupCWE-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-26636 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66781CVE 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.