Security readout for executives and security teams
This vulnerability affects Citadel/WebCit deployments described as through webcit-926. A network attacker positioned between a user and server may inject cleartext commands during STARTTLS negotiation, potentially exposing credentials. The attack requires meddler-in-the-middle positioning and protocol timing, so urgency is moderate unless affected mail services are exposed on untrusted networks. Exposure is most likely where Citadel/WebCit through webcit-926 provides POP3, IMAP, or SMTP with STARTTLS reachable from networks where traffic interception is plausible. The source bundle does not provide CPEs or a complete affected-version matrix. Treat as a moderate confidentiality risk. It should be scheduled for remediation, with higher priority for internet-facing mail services or environments where users connect over untrusted networks. Mitigation focus: Inventory Citadel/WebCit deployments and exposed POP3, IMAP, and SMTP STARTTLS services.; Check Citadel Security guidance for confirmed fixed versions or configuration mitigations.; Restrict mail protocol access to trusted networks where operationally feasible..
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
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ATT&CK lookup starting points
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CWE-77: Command execution behavior lookup
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Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-29547 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
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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:H/PR:N/UI:N/S:U/C:H/I:N/A:N2.23.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
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 Neutralization of Special Elements used in a Command ('Command Injection')
Improper Neutralization of Special Elements used in a Command ('Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.