Security readout for executives and security teams
Plain-English summary
CVE-2019-19958 is a denial-of-service issue in libIEC61850 1.4.0. A signedness problem may cause the library to try an excessive memory allocation. The public source bundle does not name active exploitation, CVSS severity, or a confirmed fix.
Executive priority
Treat this as an exposure-identification task unless libIEC61850 is used in critical operational systems. Business urgency depends on where the library is embedded and whether service interruption would affect operations.
Technical view
The issue is in StringUtils_createStringFromBuffer in common/string_utilities.c. An integer signedness error can convert buffer handling into an oversized allocation attempt, potentially exhausting memory or crashing dependent software. Evidence is limited to the CVE description and referenced GitHub issue.
Likely exposure
Exposure is limited to systems, applications, or devices that embed libIEC61850 1.4.0. The source bundle does not provide CPEs, vendors, downstream products, or deployment patterns.
Exploitation context
No active exploitation is supported by the provided sources. The CVE is not marked KEV, and the bundle does not include exploit availability, remote reachability, authentication context, or attack complexity.
Researcher notes
The public record identifies the vulnerable function and impact class but omits CVSS, CWE, exploit conditions, affected CPEs, and remediation details. Avoid assuming downstream products or exploitability without vendor-specific evidence.
Mitigation direction
- Inventory software and devices using libIEC61850 1.4.0.
- Check upstream libIEC61850 guidance and release notes for fixes.
- Ask vendors whether their products embed the affected library version.
- Prioritize review for operational systems where service loss has business impact.
Validation and detection
- Confirm whether libIEC61850 1.4.0 is present in application dependencies.
- Review vendor SBOMs or build manifests for bundled library versions.
- Check crash or memory-exhaustion logs around IEC 61850 handling paths.
- Verify remediation status against upstream or vendor advisories.
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-2019-19958 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://github.com/mz-automation/libiec61850/issues/198CVE 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.