CVE-2026-88097: Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges locall

Q: How do I fix CVE-2026-88097?

edge chromium: upgrade to 153.0.4234.46. Exact commands for each OS are on this page.

Q: Is CVE-2026-88097 being exploited?

CVE-2026-88097 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-88097 affect?

CVE-2026-88097 affects edge chromium. Severity is high (CVSS 8.1). Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges locally.

Q: How urgent is CVE-2026-88097?

Priority 38/100. High severity; On your watchlist

Routine

HIGH 8.1WATCHLISTUPGRADE

CVE-2026-88097 is a high-severity flaw (CVSS 8.1) affecting edge chromium. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges locally.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 83%)
CISA exploited list	No
Weakness	CWE-416
Published	2026-09-18
Last modified	2026-09-24

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-09-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-18 21:18 UTCPublished CVE record published
2026-09-24 20:48 UTCUpdated Record last modified

microsoft edge chromium UPGRADE

Affected: < 153.0.4234.46

Fixed in: 153.0.4234.46

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy edge-chromium || rpm -q edge-chromium || edge-chromium --version

2. UPGRADE to 153.0.4234.46 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade edge-chromium

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade edge-chromium

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-88097?

edge chromium: upgrade to 153.0.4234.46. Exact commands for each OS are on this page.

Is CVE-2026-88097 being exploited?

CVE-2026-88097 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-88097 affect?

CVE-2026-88097 affects edge chromium. Severity is high (CVSS 8.1). Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to elevate privileges locally.

How urgent is CVE-2026-88097?

Priority 38/100. High severity; On your watchlist

Software pages

Microsoft Edge vulnerabilities · Chromium vulnerabilities

Related CVEs

CVE-2026-42891 MEDIUM 6.5 UPGRADE User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an una
CVE-2026-42838 MEDIUM 5.4 UPGRADE Improper neutralization of special elements in output used by a downstream component ('injection') in Microsof
CVE-2026-41107 HIGH 7.4 UPGRADE External control of file name or path in Microsoft Edge (Chromium-based) allows an unauthorized attacker to di
CVE-2026-40416 MEDIUM 4.3 UPGRADE User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an una
CVE-2026-32208 HIGH 8.8 MITIGATE Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Entra ID all

References

← Back to latest CVEs