Security readout for executives and security teams
Plain-English summary
A flaw in Chrome’s Chromecast component could let a nearby or locally positioned attacker use malicious network traffic to potentially break out of Chrome’s security sandbox. Successful exploitation could compromise data, system integrity, and availability. Chrome versions before 150.0.7871.182 are described as vulnerable.
Executive priority
Treat as an urgent browser update because sandbox escape can undermine a major security boundary and the stated impact is severe. Accelerate deployment, but do not characterize this as actively exploited without new evidence.
Technical view
CVE-2026-16416 is a CWE-190 integer overflow in Chrome’s Chromecast functionality. The supplied record assigns CVSS 3.1 score 9.3 with no privileges or user interaction required, changed scope, and high impact. The attack vector is rated local, while exploitation involves malicious network traffic. Chromium rates the issue High.
Likely exposure
Systems running Google Chrome versions earlier than 150.0.7871.182 are potentially exposed. Practical exposure depends on whether an attacker can achieve the stated local position and deliver malicious network traffic to the Chromecast component. The supplied evidence does not further define those prerequisites.
Exploitation context
The supplied sources do not establish active exploitation, and the CVE is not listed as KEV in the bundle. They describe potential sandbox escape by a local attacker through malicious network traffic. No exploit method or confirmed campaign is documented in the provided evidence.
Researcher notes
The source bundle contains a version-field ambiguity: its affected array lists 150.0.7871.182, while the description says versions prior to that release are vulnerable. The description supports treating 150.0.7871.182 as the fixed boundary. Root-cause and attack-prerequisite detail is limited in the supplied evidence.
Mitigation direction
- Update Chrome to version 150.0.7871.182 or later.
- Prioritize managed endpoints running older Chrome versions.
- Review Google and Chromium guidance for additional mitigations or platform-specific details.
Validation and detection
- Inventory installed Chrome versions across managed endpoints.
- Confirm all installations report version 150.0.7871.182 or later.
- Verify update policies successfully reach unmanaged, offline, and infrequently connected systems.
- Monitor vendor advisories for revised affected-version or exploitation information.
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-190: 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-16416 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
- Critical
- CVSS
- 9.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H2.56CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.3CriticalVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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
- https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0256605430.htmlCVE reference, Chrome
- https://issues.chromium.org/issues/520172356CVE reference, Chrome
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.
Integer Overflow or Wraparound
Integer Overflow or Wraparound represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.