CVE-2026-7978: Inappropriate implementation in Google Chrome
CVE-2026-7978 is a high-severity vulnerability in Google Chrome on Mac, prior to version 148.0.7778.96. It involves an inappropriate implementation in the Companion component that allows a remote attacker to escalate privileges to the OS level via malicious network traffic. The vulnerability has a CVSS score of 8.1, indicating a significant risk. No known exploits are reported in the wild. The vendor advisory linked does not explicitly confirm patch availability or remediation status at this time.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-7978) affects Google Chrome on Mac systems before version 148.0.7778.96. It stems from an inappropriate implementation in the Companion feature, which can be triggered remotely through crafted network traffic. Successful exploitation results in OS-level privilege escalation, allowing an attacker to gain higher privileges on the affected system. The CVSS 3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability. The vulnerability is categorized under CWE-693 (Protection Mechanism Failure). No official remediation level or patch is explicitly stated in the vendor advisory provided.
Potential Impact
If exploited, this vulnerability allows a remote attacker to escalate privileges on the operating system level, potentially leading to full system compromise. The high CVSS score indicates severe impact on confidentiality, integrity, and availability of the affected system. There are no known exploits in the wild at the time of this report.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html for current remediation guidance. Until an official fix is confirmed, users should exercise caution when interacting with untrusted network traffic. Monitor official Google Chrome release notes for updates regarding this vulnerability.
CVE-2026-7978: Inappropriate implementation in Google Chrome
Description
CVE-2026-7978 is a high-severity vulnerability in Google Chrome on Mac, prior to version 148.0.7778.96. It involves an inappropriate implementation in the Companion component that allows a remote attacker to escalate privileges to the OS level via malicious network traffic. The vulnerability has a CVSS score of 8.1, indicating a significant risk. No known exploits are reported in the wild. The vendor advisory linked does not explicitly confirm patch availability or remediation status at this time.
CVSS v3.1
Score 8.1high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-7978) affects Google Chrome on Mac systems before version 148.0.7778.96. It stems from an inappropriate implementation in the Companion feature, which can be triggered remotely through crafted network traffic. Successful exploitation results in OS-level privilege escalation, allowing an attacker to gain higher privileges on the affected system. The CVSS 3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability. The vulnerability is categorized under CWE-693 (Protection Mechanism Failure). No official remediation level or patch is explicitly stated in the vendor advisory provided.
Potential Impact
If exploited, this vulnerability allows a remote attacker to escalate privileges on the operating system level, potentially leading to full system compromise. The high CVSS score indicates severe impact on confidentiality, integrity, and availability of the affected system. There are no known exploits in the wild at the time of this report.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html for current remediation guidance. Until an official fix is confirmed, users should exercise caution when interacting with untrusted network traffic. Monitor official Google Chrome release notes for updates regarding this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-05-05T22:59:25.764Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html","vendor":"Google"}]
Threat ID: 69fb86e5cbff5d861024e8d8
Added to database: 05/06/2026, 18:22:29 UTC
Last enriched: 05/14/2026, 03:56:50 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 75
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