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Full vulnerability report · 2026
CVE-2026-8522High confidence

Use after free in Downloads in Google Chrome on Mac prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code via a crafted HTML page

Google · Chrome

8.8HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-30434

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
01

What, why and how

Use after free in Downloads in Google Chrome on Mac prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)

What

Use after free in Downloads in Google Chrome on Mac prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may execute code or commands in the affected security context.

What

Use after free in Downloads in Google Chrome on Mac prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may execute code or commands in the affected security context.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Use After Free → execute code or commands in the affected security context
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-416

CWE-416: Use After Free. The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
After compromise, an attacker may use built-in shells, scripting engines, scheduled tasks and native network utilities for discovery, persistence or movement. This is a plausible LoTL path, not evidence that it has occurred for every attack.
NetworkUnauthenticatedRemote code executionCWE-416
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-W-2026-1542Google Chrome und Microsoft Edge: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Google Chrome und Microsoft Edge ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Sicherheitsvorkehrungen zu umgehen, und um einen nicht näher spezifizierten Angriff durchzuführen.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0734Multiples vulnérabilités dans les produits Palo Alto Networks

.cve.org/CVERecord?id=CVE-2026-8513 Référence CVE CVE-2026-8514 https://www.cve.org/CVERecord?id=CVE-2026-8514 Référence CVE CVE-2026-8515 https://www.cve.org/CVERecord?id=CVE-2026-8515 Référence CVE CVE-2026-8516 https://www.cve.org/CVERecord?id=CVE-2026-8516 Référence CVE CVE-2026-8517 https://www.cve.org/CVERecord?id=CVE-2026-8517 Référence CVE CVE-2026-8518 https://www.cve.org/CVERecord?id=CVE-2026-8518 Référence CVE CVE-2026-8519 https://www.cve.org/CVERecord?id=CVE-2026-8519 Référence CVE CVE-2026-8520 https://www.cve.org/CVERecord?id=CVE-2026-8520 Référence CVE CVE-2026-8521 https://www.cve.org/CVERecord?id=CVE-2026-8521 Référence CVE CVE-2026-8522 https://www.cve.org/CVERecord?id=CVE-2026-8522 Référence CVE CVE-2026-8523 https://www.cve.org/CVERecord?id=CVE-2026-8523 Référence CVE CVE-2026-8524 https://www.cve.org/CVERecord?id=CVE-2026-8524 Référence CVE CVE-2026-8525 https://www.cve.org/CVERecord?id=CVE-2026-8525 Référence CVE CVE-2026-8526 https://www.cve.org/CVERecord?id=CVE-2026-8526 Référence CVE CVE-2026-8527 https://www.cve.org/CVERecord?id=CVE-2026-8527 Référence CVE CVE-2026-8528 https://www.cve.org/CVERecord?id=CVE-2026-8528 Référence CVE CVE-2026-8529 https://www.cve.org/CVERecord?id=CVE-2026-8529 Référence CVE CVE-2026-8530 https://www.cve.org/CVERecord?id=CVE-2026-8530 Ré

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0633Multiples vulnérabilités dans Microsoft Edge

Affaire suivie par: CERT-FR Avis du CERT-FR Objet: Multiples vulnérabilités dans Microsoft Edge Gestion du document Référence CERTFR-2026-AVI-0633 Titre Multiples vulnérabilités dans Microsoft Edge Date de la première version 22 mai 2026 Date de la dernière version 22 mai 2026 Source(s) Bulletin de sécurité Microsoft Edge CVE-2026-8564 du 15 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-8574 du 15 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-8583 du 15 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-8520 du 21 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-8521 du 21 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-8522 du 21 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-9110 du 21 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-9111 du 21 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-9112 du 21 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-9113 du 21 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-9114 du 21 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-9115 du 21 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-9116 du 21 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-9117 du 21 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-9118 du 21 mai 2026 Bulletin de sécurité Microsoft Edge CVE-2026-9119

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0574Multiples vulnérabilités dans Google Chrome

.cve.org/CVERecord?id=CVE-2026-8513 Référence CVE CVE-2026-8514 https://www.cve.org/CVERecord?id=CVE-2026-8514 Référence CVE CVE-2026-8515 https://www.cve.org/CVERecord?id=CVE-2026-8515 Référence CVE CVE-2026-8516 https://www.cve.org/CVERecord?id=CVE-2026-8516 Référence CVE CVE-2026-8517 https://www.cve.org/CVERecord?id=CVE-2026-8517 Référence CVE CVE-2026-8518 https://www.cve.org/CVERecord?id=CVE-2026-8518 Référence CVE CVE-2026-8519 https://www.cve.org/CVERecord?id=CVE-2026-8519 Référence CVE CVE-2026-8520 https://www.cve.org/CVERecord?id=CVE-2026-8520 Référence CVE CVE-2026-8521 https://www.cve.org/CVERecord?id=CVE-2026-8521 Référence CVE CVE-2026-8522 https://www.cve.org/CVERecord?id=CVE-2026-8522 Référence CVE CVE-2026-8523 https://www.cve.org/CVERecord?id=CVE-2026-8523 Référence CVE CVE-2026-8524 https://www.cve.org/CVERecord?id=CVE-2026-8524 Référence CVE CVE-2026-8525 https://www.cve.org/CVERecord?id=CVE-2026-8525 Référence CVE CVE-2026-8526 https://www.cve.org/CVERecord?id=CVE-2026-8526 Référence CVE CVE-2026-8527 https://www.cve.org/CVERecord?id=CVE-2026-8527 Référence CVE CVE-2026-8528 https://www.cve.org/CVERecord?id=CVE-2026-8528 Référence CVE CVE-2026-8529 https://www.cve.org/CVERecord?id=CVE-2026-8529 Référence CVE CVE-2026-8530 https://www.cve.org/CVERecord?id=CVE-2026-8530 Ré

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
148.0.7778.168 < 148.0.7778.168
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 14 May 2026 · Last source change 15 May 2026, 03:56 UTC · CWE-416 · Use After Free

CVE recordCVE.org · 5.2
CVSS sourceCISA ADP
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-30434
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-8522 · cve.blacktree.nl