Security readout for executives and security teams
Plain-English summary
Older TYPO3 installations had a backend authentication weakness. A remote attacker could send a specially crafted request that bypassed backend authentication protections. For organizations still running these legacy TYPO3 versions, this could threaten administrative access to the site.
Executive priority
Treat as high priority for any remaining legacy TYPO3 deployment, especially internet-facing sites. The issue concerns backend authentication, but available evidence is limited and does not confirm active exploitation.
Technical view
CVE-2011-4628 affects TYPO3 before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4. The issue is described as an authentication mechanism bypass in the backend via a crafted request. The provided sources do not include CVSS, CWE, exploit code, or detailed root-cause information.
Likely exposure
Exposure is most likely where legacy TYPO3 backend interfaces are reachable and the installation predates the fixed 4.3.12, 4.4.9, or 4.5.4 releases.
Exploitation context
The sources describe remote attackability through a crafted request. They do not state active exploitation, and the CVE is not listed as KEV in the provided bundle.
Researcher notes
The public bundle is sparse: no CVSS vector, CWE, affected CPEs, or detailed exploit conditions are provided. Analysis should stay anchored to TYPO3’s advisory and Debian tracking data, then validate exposure through version and backend reachability checks.
Mitigation direction
- Upgrade TYPO3 to at least the fixed version for the deployed branch.
- Prefer migrating unsupported legacy TYPO3 installations to a supported release.
- Restrict TYPO3 backend access to trusted networks where operationally feasible.
- Review TYPO3 vendor advisory guidance before applying compensating controls.
Validation and detection
- Inventory TYPO3 versions across public and internal web properties.
- Confirm whether backend interfaces are reachable from untrusted networks.
- Verify deployed versions are 4.3.12, 4.4.9, 4.5.4, or later.
- Review web and application logs for unusual backend authentication requests.
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
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CVE-2011-4628 mapping review
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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://security-tracker.debian.org/tracker/CVE-2011-4628CVE reference · x_refsource_MISC
- https://typo3.org/security/advisory/typo3-core-sa-2011-001/#Authentication_Delay_BypassCVE reference · x_refsource_CONFIRM
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.