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CVE-2026-9983: Type Confusion in Skia in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitr...

Type Confusion in Skia in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

HighCVSS 8.8Not KEV-listed Updated
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Glexia's Take high

Analyst readout for executives and security teams

Plain-English summary

CVE-2026-9983 is a high-severity Chrome flaw in Skia, Chrome's graphics component. A user visiting a crafted HTML page could let an attacker run code inside Chrome's sandbox. That is serious for enterprise endpoints, especially where browser patching is slow.

Executive priority

Treat this as an urgent browser patching item, not a confirmed breach. The business risk is broad endpoint exposure from routine web browsing, with high impact if exploited successfully.

Technical view

The CVE describes CWE-843 type confusion in Skia affecting Google Chrome before 148.0.7778.216. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, score 8.8. The source states arbitrary code execution inside a sandbox via crafted HTML.

Likely exposure

Organizations with desktop Google Chrome versions earlier than 148.0.7778.216 are the directly evidenced exposure. The provided sources do not identify other affected products, platforms, or Chromium-based browsers.

Exploitation context

The attack path requires a user to open or be directed to malicious HTML. The bundle does not show CISA KEV listing, active exploitation, public exploit code, or indicators of compromise.

Researcher notes

The Chromium issue may have restricted detail. Available evidence supports sandboxed arbitrary code execution through Skia type confusion, but not exploit maturity, indicators, or bypass requirements. Avoid assuming a full host compromise without a separate sandbox escape.

Mitigation direction

  • Update Google Chrome to 148.0.7778.216 or later, following vendor release guidance.
  • Prioritize managed endpoints, shared workstations, and high-risk user groups.
  • Confirm browser auto-update policies are enabled and reporting accurately.
  • Review the Chrome release post for any updated vendor guidance.

Validation and detection

  • Inventory Chrome versions across managed endpoints.
  • Flag any Chrome installation earlier than 148.0.7778.216.
  • Confirm update telemetry after patch deployment.
  • Check browser management tools for failed or deferred updates.
  • Review security monitoring for unusual browser crashes or suspicious HTML delivery.
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-843: 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-2026-9983 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
8.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/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
8.8 CVSS 3.1 High CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H 2.8 5.9 CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

8.8 High
CVSS 3.1 vector shape for CVE-2026-9983 Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/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-843

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

CWE-843 · source CWE mapping

CWE mapping pending import

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