Security readout for executives and security teams
Plain-English summary
A networking library used inside C++ applications mishandled a rare SSL error state before Asio 1.13.0. Instead of returning a fallback error code, the application could receive incomplete error information. The business risk depends on where affected Asio SSL code is embedded.
Executive priority
Treat this as a targeted dependency remediation item, not an emergency exploitation event based on available evidence. Prioritize externally reachable C++ services and products with bundled Asio SSL code, then fold internal-only systems into normal patch cycles.
Technical view
CVE-2019-25219 affects Asio C++ Library before 1.13.0. The issue is missing fallback error-code handling when OpenSSL reports SSL_ERROR_SYSCALL without associated SSL error information. The CVSS 3.1 vector is network-accessible, unauthenticated, no user interaction, with high confidentiality impact.
Likely exposure
Exposure is most likely in C++ services, appliances, or products that embed standalone Asio before 1.13.0 and use its SSL/TLS functionality. The source bundle lists no specific vendor products or CPEs, so dependency inventory is required.
Exploitation context
The source bundle does not show CISA KEV listing or cited active exploitation. Public references identify the code change and version comparison, but do not provide evidence of observed exploitation in the provided materials.
Researcher notes
The CVE record has limited affected-product metadata: vendor and product are listed as n/a, with no CPEs. Analysis should focus on confirming actual Asio embedding and SSL use. Avoid assuming Boost.Asio or downstream products are affected unless verified by vendor evidence.
Mitigation direction
- Upgrade standalone Asio to 1.13.0 or later where applicable.
- Check downstream vendor advisories for products bundling Asio.
- Rebuild and redeploy software that vendors Asio source internally.
- Prioritize internet-facing TLS services using affected Asio versions.
- Document compensating controls if immediate upgrade is blocked.
Validation and detection
- Inventory source trees, submodules, and package metadata for Asio versions.
- Confirm whether SSL/TLS code paths use affected Asio components.
- Review vendor SBOMs for bundled standalone Asio before 1.13.0.
- Run regression tests covering TLS connection error handling.
- Track remediation status separately for embedded and third-party products.
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
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CWE-1188: Exact CWE lookup
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Open ATT&CK lookupCVE-2019-25219 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.
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:N3.93.6Primary CVE scoreVulnerability 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
Source materials
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.
Initialization of a Resource with an Insecure Default
Initialization of a Resource with an Insecure Default represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.