Security readout for executives and security teams
Plain-English summary
A very old flaw in mSQL database software (version 2.0.1 and earlier) lets an attacker send oversized data to the server and take control of it remotely. This is a legacy issue disclosed in 1999. If your organization still runs this software, it is unsupported and should be replaced. Modern databases and current infrastructure are not affected by this specific bug.
Executive priority
Low priority for most modern enterprises because mSQL is rarely deployed today. Priority becomes high only if asset discovery confirms a live mSQL 2.0.1 or older instance, especially one reachable from untrusted networks. Treat any confirmed instance as legacy end-of-life risk requiring decommissioning rather than patching.
Technical view
The CVE describes a remotely exploitable buffer overflow in mSQL (Mini SQL) versions 2.0.1 and below, enabling arbitrary code execution on the database host. Public sources provide only a brief description without CVSS scoring, CWE mapping, or specific technical parameters. No patched version is named in the bundle. mSQL is a legacy relational database that predates most current production stacks and is generally out of vendor support.
Likely exposure
Exposure is limited to hosts still running mSQL 2.0.1 or older, typically legacy Unix systems from the late 1990s. Most modern environments do not run mSQL, so real-world exposure today is expected to be very low but non-zero in aging industrial, academic, or embedded systems that were never modernized.
Exploitation context
The source bundle does not indicate KEV listing or confirmed active exploitation. The CVE is not on CISA's KEV list per the provided data. Public exploit tooling from the era historically existed for many mSQL overflows, but the bundle here cites only the IBM X-Force reference and does not confirm current in-the-wild activity.
Researcher notes
The public bundle is thin: no CVSS, no CWE, no specific affected CPE, and only an X-Force reference. The description is consistent with a pre-authentication remote buffer overflow in the mSQL server daemon. Researchers auditing legacy systems should look for mSQL binaries, verify version strings, and treat presence of this software as a broader signal of unmanaged legacy infrastructure needing full lifecycle review.
Mitigation direction
- Identify and inventory any hosts still running mSQL 2.0.1 or earlier.
- Retire or migrate legacy mSQL instances to a supported database platform.
- Restrict network access to any remaining mSQL ports to trusted management networks only.
- Consult vendor or archival Hughes Technologies guidance for any late-cycle patches.
- Place unavoidable legacy instances behind a firewall or reverse proxy with strict allowlists.
Validation and detection
- Scan the environment for listening mSQL services on their historical default port.
- Cross-reference asset inventories and CMDB for legacy database software references.
- Confirm running mSQL binary versions against the vulnerable 2.0.1-and-below range.
- Review network flow logs for external connectivity to identified mSQL hosts.
- Verify replacement or isolation status with system owners after remediation.
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.
CVE-1999-0276 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
- 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://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0276CVE reference · x_refsource_MISC
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.