- Published
- Source
- The Hacker News
- Filed under
- Nation-state, Zero-days, Microsoft
- Vulnerabilities
- 3 CVEs Exploited
A Chinese threat actor codenamed UTA0565 has been observed exploiting the recently disclosed Google Chrome-Microsoft Windows exploit chain as zero-days through fake websites. The attacks, detected on September 3 and 4, 2026, involved the chaining of two vulnerabilities in Chrome (CVE-2026-85046, CVE-2026-87491) and one impacting Windows Advanced Local Procedure Call (CVE-2026-85880) to break…
If you run the affected product
- Find every instance – especially the ones reachable from the internet.
- Apply the vendor's patch or mitigation now: exploited flaws are fixed in days, not at the next patch cycle.
- Then check for signs it was used before you patched: web shells, new accounts, unusual outbound traffic.
More helpCISA's Known Exploited Vulnerabilities catalogue (opens in a new tab)
The vulnerabilities in this story
CVE-2026-85046 in the NVD (opens in a new tab)
- CVSS8.8High
- CISA KEVExploitedon the list since 4 Sep
CVE-2026-87491 in the NVD (opens in a new tab)
- CVSS8.8High
- CISA KEVExploitedon the list since 9 Sep
CVE-2026-85880 in the NVD (opens in a new tab)
- CVSS7.8High
- EPSS3.6%chance of exploitation in 30 days
- CISA KEVExploitedon the list since 8 Sep
Exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog (CC0). Exploit prediction: EPSS by FIRST. This product uses the NVD API but is not endorsed or certified by the NVD.
Defender’s notebook
The attacker technique behind this story, in MITRE’s terms – and what to check in your own estate.
Exploit Public-Facing Application
Initial AccessWhat a defender checks
- Find every internet-facing instance of the affected product.
- Patch, or apply the vendor's mitigation now – CISA's KEV list gives a deadline.
- Look for signs it was exploited before you patched: web shells, new accounts, odd outbound traffic.
Build the skillBlue Team Analyst · Vulnerability Management
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Blue Team Analyst · Vulnerability Management
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- Read scanner output properly
- Prioritise with CVSS, EPSS and asset criticality
- Track remediation to closure
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