Security readout for executives and security teams
Plain-English summary
CVE-2026-57992 is a Microsoft Edge Chromium-based remote code execution issue caused by a use-after-free memory bug. An attacker could execute code over the network, but the CVSS data says user interaction is required and attack complexity is high.
Executive priority
Prioritize remediation in the next normal browser patch cycle, faster for high-risk users or unmanaged devices. The impact is high, but the provided evidence does not support emergency exploited-in-the-wild treatment.
Technical view
The source bundle describes CWE-416 use-after-free in Microsoft Edge Chromium-based. CVSS 3.1 is 7.5, with network attack vector, no privileges required, required user interaction, high attack complexity, and high confidentiality, integrity, and availability impact. Microsoft lists a vendor advisory with patch status.
Likely exposure
Organizations are potentially exposed where Microsoft Edge Chromium-based is installed and not updated according to Microsoft guidance. The bundle’s affected-version detail is limited, so asset validation should use the MSRC advisory rather than assuming only one deployed build is relevant.
Exploitation context
The bundle does not show CISA KEV listing or confirmed active exploitation. CVSS exploit maturity is marked unproven. Treat this as serious because successful exploitation could run code, but do not classify it as exploited-in-the-wild from the provided evidence.
Researcher notes
Key gaps are exact affected build ranges and any exploit telemetry beyond the CVE metadata. Validation should focus on Microsoft’s advisory and endpoint version evidence. Avoid assuming Chromium upstream scope unless Microsoft or another cited source states it.
Mitigation direction
- Apply the Microsoft Edge update referenced by the MSRC advisory.
- Enable and verify automatic Edge updates across managed endpoints.
- Require browser restarts where needed to complete update installation.
- Monitor Microsoft and CVE records for revised affected-version details.
- Prioritize systems used for web browsing and external content handling.
Validation and detection
- Inventory Microsoft Edge Chromium-based installations across endpoints.
- Compare installed Edge versions against the MSRC CVE guidance.
- Confirm update deployment status through endpoint management or vulnerability tooling.
- Verify users restarted Edge after update installation.
- Track exceptions for unmanaged or offline devices.
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-416: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-57992 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:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
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:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C1.65.9microsoftVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
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
- Microsoft Edge (Chromium-based) Remote Code Execution VulnerabilityCVE reference, microsoft · vendor-advisory, patch
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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.