Security readout for executives and security teams
Plain-English summary
CVE-2019-25598 is a local denial-of-service issue in HeidiSQL Portable 10.1.0.5464. A person with local access to the application can crash it by entering an overly long password during Microsoft SQL Server login. The business impact is workstation-level disruption, not evidence of data theft or remote compromise.
Executive priority
Handle through normal vulnerability management, with priority for privileged database-user workstations. The issue can disrupt work but current sources do not indicate remote compromise, data exposure, or active exploitation.
Technical view
The vulnerability is reported as a CWE-787 out-of-bounds write/buffer overflow in HeidiSQL Portable 10.1.0.5464. The trigger is an excessively long string in the password field during Microsoft SQL Server login, causing application crash. CVSS v4.0 is 6.9 with local attack vector and high vulnerable-system availability impact.
Likely exposure
Exposure is limited to systems running HeidiSQL Portable 10.1.0.5464, especially database administrator or developer workstations. The source bundle identifies only this portable version as affected. Network-facing server exposure is not indicated by the available evidence.
Exploitation context
Public exploit information exists on Exploit-DB, but the source bundle does not show CISA KEV listing or confirmed active exploitation. The described impact is local application crash, requiring access to interact with the HeidiSQL login interface.
Researcher notes
The available record names HeidiSQL Portable 10.1.0.5464 only. Exploit-DB provides public proof-of-concept context, but this assessment avoids weaponization details. No vendor fix statement is included in the source bundle, so remediation should be confirmed against HeidiSQL guidance.
Mitigation direction
- Inventory endpoints for HeidiSQL Portable 10.1.0.5464.
- Remove the affected portable build where it is not required.
- Check HeidiSQL vendor guidance and releases for a safe replacement version.
- Restrict use of portable database tools on shared or unmanaged workstations.
Validation and detection
- Confirm installed or stored HeidiSQL Portable version numbers.
- Prioritize developer and database administrator workstations for review.
- Check whether the affected portable ZIP was downloaded or deployed internally.
- Document compensating controls if upgrade or removal is delayed.
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-787: 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 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-2019-25598 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
- 6.9 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA: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.
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:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
6.9MediumVector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-46749CVE reference · exploit
- Official Product HomepageCVE reference · product
- Product ReferenceCVE reference · product
- VulnCheck Advisory: HeidiSQL Portable 10.1.0.5464 Denial of Service via Buffer OverflowCVE reference · third-party-advisory
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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.