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CVE Record

CVE-2021-27990: Appspace 6.2.4 is vulnerable to a broken authentication mechanism where pages such as /medianet/mail.aspx c...

Appspace 6.2.4 is vulnerable to a broken authentication mechanism where pages such as /medianet/mail.aspx can be called directly and the framework is exposed with layouts, menus and functionalities.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-27990 describes an authentication weakness in Appspace 6.2.4. Certain web pages, including /medianet/mail.aspx, could reportedly be opened directly, exposing the application framework, layouts, menus, and functionality without normal access checks. Treat this as an access-control concern for any Appspace 6.2.4 deployment.

Executive priority

Prioritize review if Appspace 6.2.4 supports business-critical communications or is externally reachable. The issue could allow unintended access to application functions, but public records lack severity scoring and confirmed exploitation evidence.

Technical view

The CVE record describes broken authentication in Appspace 6.2.4 where direct requests to pages such as /medianet/mail.aspx expose framework UI elements and functions. The public record does not provide CVSS, CWE, patch status, or detailed impact boundaries. A public GitHub PoC reference exists, but KEV does not list this CVE.

Likely exposure

Organizations running Appspace 6.2.4 may be exposed, especially if the application is reachable by untrusted users or the internet. Exposure depends on deployment configuration and whether affected pages are accessible without authentication.

Exploitation context

A public PoC reference is listed, indicating public technical discussion exists. The provided sources do not show CISA KEV listing or confirmed active exploitation. Impact beyond exposed layouts, menus, and functionality is not fully documented in the source bundle.

Researcher notes

Evidence is limited. The CVE description names Appspace 6.2.4 and one example path. No CVSS, CWE, vendor advisory, affected CPE, or patch details are included in the provided sources. Avoid assuming broader version impact without vendor confirmation.

Mitigation direction

  • Identify whether Appspace 6.2.4 is deployed in your environment.
  • Check Appspace vendor guidance for fixed versions or recommended controls.
  • Restrict Appspace access to trusted networks or VPN where feasible.
  • Ensure sensitive pages enforce authentication and authorization server-side.
  • Monitor web logs for unauthenticated direct access to /medianet/ paths.

Validation and detection

  • Inventory Appspace versions and confirm any 6.2.4 instances.
  • Review whether /medianet/mail.aspx is reachable without authentication.
  • Test only in approved environments and avoid destructive actions.
  • Check access logs for direct requests to affected pages.
  • Document whether vendor patches or configuration guidance were applied.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

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CVE-2021-27990 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
3Timeline events
1ADP providers
2Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.