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CVE Record

CVE-2026-9909: Integer overflow in Skia in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had comprom...

Integer overflow in Skia in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

HighCVSS 7.5Not KEV-listed Updated
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Glexia's Take high

Analyst readout for executives and security teams

Plain-English summary

This is a high-severity Chrome vulnerability in Skia, Chrome's graphics engine. A malicious page could lead to code execution inside Chrome's sandbox, but the attacker first needs renderer-process compromise and user interaction. The provided sources do not show active exploitation.

Executive priority

Treat as a high-priority browser patching item. It is not described as actively exploited in the provided evidence, but browser code execution issues can become operationally important quickly.

Technical view

CVE-2026-9909 is described as an integer overflow in Skia affecting Google Chrome before 148.0.7778.216. The CVSS vector is network-reachable, high complexity, no privileges, user interaction required, with high confidentiality, integrity, and availability impact.

Likely exposure

Organizations with managed or unmanaged Chrome installations below 148.0.7778.216 are potentially exposed. Exposure is highest for users who browse untrusted sites or open externally supplied web content.

Exploitation context

The CVE requires a crafted HTML page and prior renderer-process compromise. It enables arbitrary code execution inside the sandbox. KEV is false, and the provided sources do not cite active exploitation.

Researcher notes

The description names an integer overflow in Skia, while the bundle lists CWE-472; that inconsistency should be verified against vendor metadata. The provided issue link may contain more detail, but no exploit mechanics or patch internals are included here.

Mitigation direction

  • Update Chrome to version 148.0.7778.216 or later.
  • Require browser restart after update deployment.
  • Prioritize managed endpoint fleets and high-risk browsing groups.
  • Monitor Google Chrome release notes for revised guidance.
  • Check Chromium issue updates when access is available.

Validation and detection

  • Inventory Chrome versions across managed endpoints.
  • Confirm installed Chrome is 148.0.7778.216 or later.
  • Verify update policy enforces automatic Chrome updates.
  • Check whether users have restarted Chrome after patching.
  • Track exceptions for unmanaged or offline devices.
Prepared
Confidence
medium
Sources
4

Public sources used

Based on public source material and reviewed before publication.

Potential ATT&CK relevance

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 · low confidence lookup

CWE-472: 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.

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description · low confidence lookup

Execution 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.

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cve · low confidence lookup

CVE-2026-9909 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profile CVE Program record
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

Official CVE source material

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.

1 CVSS vectors
3 Timeline events
1 ADP providers
3 Source links

SSVC decision data

CISA-ADP CISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

CVSS vector scores

1 official score

We 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.

Score Version Severity Vector Exploit Impact Source
7.5 CVSS 3.1 High CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H 1.6 5.9 CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

7.5 High
CVSS 3.1 vector shape for CVE-2026-9909 Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reserved CVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE published CVE Program

    The CVE record was published.

  3. CVE updated CVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADP CISA ADP Vulnrichment
cvssV3_1other:ssvc

Source materials

Affected products

Products and packages named in the record

Vendor Product Version / package Status
Google Chrome 148.0.7778.216 Listed
Weakness

CWE details

CWE-472

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-472 · source CWE mapping

CWE mapping pending import

This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.

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