Security readout for executives and security teams
Plain-English summary
AvantFAX 3.3.7 can expose fax and database backups through the web server because backup files use date-based filenames and lack access controls. The main business risk is disclosure of sensitive fax contents or database data, not system takeover.
Executive priority
Treat this as a moderate-priority confidentiality issue. Prioritize environments where AvantFAX processes sensitive business, customer, healthcare, legal, or financial faxes, because exposed backups may contain complete document and database records.
Technical view
The CVE describes CWE-200 information disclosure in AvantFAX 3.3.7. Backup copies of sent and received faxes, plus database backups, are web-hosted without access controls and named using the current date. CVSS 3.1 is 4.9 with high confidentiality impact.
Likely exposure
Exposure is likely limited to organizations running AvantFAX 3.3.7 where generated backup files are reachable from the web server. Systems handling regulated, customer, legal, medical, or financial fax traffic have higher business impact.
Exploitation context
The CVE is not listed as KEV, and the supplied sources do not report active exploitation. The CVSS vector indicates network access, low complexity, no user interaction, and high privileges required, though the description also says backups lack access controls.
Researcher notes
Evidence is narrow but consistent: the issue concerns predictable, web-hosted backup files lacking access controls. No supplied source names a patch, fixed version, or exploitation campaign. Validate actual exposure before rating it higher than the CVSS medium severity.
Mitigation direction
- Check vendor or maintainer guidance for an official fix or supported upgrade path.
- Remove fax and database backups from web-accessible directories.
- Require strong authentication and authorization for any backup retrieval path.
- Disable predictable public backup exposure in web server configuration.
- Rotate any credentials or secrets found in exposed database backups.
Validation and detection
- Inventory AvantFAX instances and confirm whether version 3.3.7 is present.
- Identify where fax and database backups are stored.
- Review web server rules for backup directory exposure.
- Confirm date-named backup files are not publicly reachable.
- Review access logs for unusual backup file 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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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 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-2023-23327 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
- 4.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A: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.
SSVC decision data
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:H/UI:N/S:U/C:H/I:N/A:N1.23.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
4.9MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/superkojiman/vulnerabilities/blob/master/AvantFAX-3.3.7/README.mdCVE reference, mitre
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.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.