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Improper input validation in Performance in Google Chrome prior to 157.0.8103.38 allowed a local attacker to potentially execute arbitrary…

7.8HighCISA-ADP
Exploited
No known exploitation
Fix
Fixed in 157.0.8103.38
Who is exposed
Not reported

Do first: Upgrade to a fixed version: 157.0.8103.38.

Published
Last modified
0.07% · 0th percentile
29/100 · provisional
Low (Chrome)
None on Exploit-DB, Metasploit or GitHub
On X
View the cve.now post
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

Improper input validation in Performance in Google Chrome prior to 157.0.8103.38 allowed a local attacker to potentially execute arbitrary code inside the sandbox via a local program. (Chromium security severity: Low)

cve.now Index

29Pcve.now Index 29 of 100 · methodology v3 · provisional
  • Exploitation0/40No signal
  • Exposure?/25Unknown. No advisory context yet
  • Reach20/20Affects Google Chrome (software on nearly every server, desktop or phone)
  • Severity8.8/10CVSS 7.8, total technical impact per CISA
  • No patch0/5No signal

What would change the score

  • Would score about 84 if added to CISA KEV
  • Would score about 79 if CISA's SSVC rates exploitation active
  • Would score about 51 if advisories confirm default setups are exposed

What to do

  • Upgrade to a fixed version: 157.0.8103.38.

Timeline

  1. CVE published
  2. First seen by cve.now1 day
  3. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  4. Posted on X by cve.now1 day
  5. Record last updated

Affected versions

  • Google Chrome

    From 157.0.8103.38 · fixed in 157.0.8103.38

Evidence 2

  1. Link
  2. Link

Corrections

None so far.

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Questions about CVE-2026-121064

Is CVE-2026-121064 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data

Which versions are affected by CVE-2026-121064?

Chrome: from 157.0.8103.38 before 157.0.8103.38.Source: cve.now feed data

How do I fix CVE-2026-121064?

Upgrade to a fixed version: 157.0.8103.38.Source: cve.now feed data

Why is it rated 7.8 High?

CVSS 7.8 scores the worst case. Chrome rates it Low.