Security readout for executives and security teams
Plain-English summary
CVE-2023-5635 is a user-enumeration flaw in ArslanSoft Education Portal before v1.1. An unauthenticated remote person may be able to learn whether accounts exist from error messages or alert signals. That can support targeted phishing, credential stuffing, or harassment, even though the CVE does not claim data modification or service outage.
Executive priority
Treat this as a high-priority confidentiality issue for any exposed Education Portal instance. It is not described as full system compromise, but it can materially improve attackers’ targeting quality and should be closed during the next urgent maintenance window.
Technical view
The record describes CWE-1320, improper protection of outbound error messages and alert signals, allowing account footprinting. CVSS 3.1 is 7.5: network reachable, low complexity, no privileges, no user interaction, high confidentiality impact, no integrity or availability impact. Affected product scope is ArslanSoft Education Portal before v1.1.
Likely exposure
Exposure is likely limited to organizations running ArslanSoft Education Portal versions before v1.1, especially internet-facing portals with login, registration, password recovery, or account lookup workflows. The CVE record provides no CPEs and limited product/version detail, so asset confirmation is required.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The issue is remotely reachable and low complexity, but available sources only support account-footprinting risk, not confirmed exploitation in the wild or public exploit tooling.
Researcher notes
Evidence is sparse: the CVE record names the class, product, affected range, and CVSS vector, but no exploit details, CPEs, or detailed advisory text are included in the bundle. Analysis should stay focused on account-footprinting behavior and version exposure until vendor or government advisories provide more specifics.
Mitigation direction
- Identify all ArslanSoft Education Portal deployments and exposed authentication-related routes.
- Upgrade Education Portal to v1.1 or later if confirmed by vendor guidance.
- Review vendor and Turkish government advisories for any product-specific remediation steps.
- Reduce exposed error detail and normalize account-related responses where configuration allows.
- Monitor authentication workflows for suspicious enumeration, credential stuffing, or phishing preparation signals.
Validation and detection
- Confirm deployed Education Portal versions against the before-v1.1 affected range.
- Verify account-related responses do not reveal whether a user exists.
- Check web access logs for repeated account discovery patterns across login or recovery flows.
- Review whether affected routes are internet-facing or restricted to trusted networks.
- Document compensating controls if upgrade status cannot be immediately confirmed.
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-1320: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCVE-2023-5635 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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:N/UI:N/S:U/C:H/I:N/A:N3.93.6TR-CERTVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/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://www.usom.gov.tr/bildirim/tr-23-0670CVE reference, TR-CERT · government-resource, broken-link
- https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-23-0670CVE reference, TR-CERT · government-resource
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 Protection for Outbound Error Messages and Alert Signals
Improper Protection for Outbound Error Messages and Alert Signals represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.