Patch Forecast
Amber warning
Patch this week.

CVE-2026-78985

Chrome: remote code execution

Risk score
76/100
CVSS
9.6 v3.1
Exploit chance (30 days)
0.5%
Published
25 Aug 2026

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What to know

What it is
Incorrect reference resolution in Google Chrome's FileSystem allowed a remote attacker to potentially execute arbitrary code via a crafted HTML page, leveraging social engineering.
Affected
{'product': 'Google Chrome', 'versions': 'prior to 152.0.7977.65'}
Fix
Upgrade to version 152.0.7977.65 or later
Exploitation
No known exploitation

Story map

Story map: ChromeTHE FLAWSTHE FIXCVE-2026-78985Remote code executionCVSS 9.6 · EPSS 1%CVE-2026-110136Use-after-free can lead toremote code executionCVSS 9.6 · EPSS 0%CVE-2026-106329Incorrect authorisation canlead to remote code executionCVSS 9.6 · EPSS 0%CVE-2026-106417Integer overflow can lead toremote code executionCVSS 9.6 · EPSS 0%Upgrade Chrome152.0.7977.65 · 155.0.8059.79· 155.0.8059.39or later on your release lineWho is exposed{'product': 'Google Chrome','versions': 'prior to152.0.7977.65'}AMBER · PATCH THIS WEEKChromeIncorrect reference resolutionin Google Chrome's FileSystemallowed a remote attacker topotentially execute arbitrarycode via a crafted HTML page,leveraging social engineering.Where it standsNo known exploitationHOW IT UNFOLDEDOfficial record on the left, the press on the right, oldest first.16 Oct · Microsoft Security Response CenterChromium CVE-2026-110136: Use after free16 Oct · Microsoft Security Response CenterChromium CVE-2026-106329: Incorrectauthorization16 Oct · Microsoft Security Response CenterChromium CVE-2026-106417: Integer overflow28 Oct · Microsoft Security Response CenterChromium: CVE-2026-78985 Incorrect referenceresolution in FileSystemCONNECTS TOSame weaknessCWE-706 (CWE-706)17 other warnings in 30 days →Same productEarlier Chrome warnings397 in the last 90 days →
Story map: the flaws, the fix, how it unfolded and what it connects to. Boxes link to the record or article.

At a glance

Chrome: Amber, patch this week. Incorrect reference resolution in Google Chrome's FileSystem allowed a remote attacker to potentially execute arbitrary code via a crafted HTML page, leveraging social engineering.

The flaws

  • CVE-2026-78985: Remote code execution (CVSS 9.6 · EPSS 1%)
  • CVE-2026-110136: Use-after-free can lead to remote code execution (CVSS 9.6 · EPSS 0%)
  • CVE-2026-106329: Incorrect authorisation can lead to remote code execution (CVSS 9.6 · EPSS 0%)
  • CVE-2026-106417: Integer overflow can lead to remote code execution (CVSS 9.6 · EPSS 0%)

The fix

Upgrade Chrome: 152.0.7977.65 · 155.0.8059.79 · 155.0.8059.39 or later on your release line

Who is exposed: {'product': 'Google Chrome', 'versions': 'prior to 152.0.7977.65'}

Where it stands

  • No known exploitation

How it unfolded

  1. 16 Oct, Microsoft Security Response Center (official): Chromium CVE-2026-110136: Use after free
  2. 16 Oct, Microsoft Security Response Center (official): Chromium CVE-2026-106329: Incorrect authorization
  3. 16 Oct, Microsoft Security Response Center (official): Chromium CVE-2026-106417: Integer overflow
  4. 28 Oct, Microsoft Security Response Center (official): Chromium: CVE-2026-78985 Incorrect reference resolution in FileSystem

Connects to

Why it is Amber

  • CVSS 9.6 critical
  • Remotely exploitable without logging in
  • Named in a government or vendor bulletin

Government and vendor bulletins

References

Original description

Incorrect reference resolution in FileSystem in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

Last activity 28 Oct 2026. Patch Forecast updates every hour.