Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
Fix not verified
Direct vendor intelligence
Authoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
1 current
CVE-2026-79025 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitychromium-browser: Chromium: System access restriction bypass via improper input validation in Workers
1 known not affected
The vendor explicitly states that these products are not affected by this CVE.
All currently supported Red Hat products
Summary
A flaw was found in Workers in Google Chrome. Improper input validation allows a remote attacker, who has already compromised the renderer process, to bypass system access restrictions. This can be achieved by presenting a specially crafted HTML page to the user.
Remediation
No remediation text is recorded.
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-2026-66016
No EUVD known-exploited evidence
Improper input validation in Workers in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)
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
4.2 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled
Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
Fix not verified
01
What, why and how
Improper input validation in Workers in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)
What
Improper input validation in Workers in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)
Why
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
How
An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
Improper input validation in Workers in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)
Why
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
How
An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
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 → Improper Input Validation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
High: exploitation depends on specific conditions
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-20: Improper Input Validation. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
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:H/PR:N/UI:R/S:U/C:L/I:L/A:N
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.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.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.CLowConfidentiality impact: A successful attack can cause a limited loss.ILowIntegrity impact: A successful attack can cause a limited loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-20
A
Official authority intelligence
Only matched European and national findings are included. Language selectors and unavailable sources are omitted.
ENISA EUVD · EUVD-2026-66016Official EUVD mapping
Improper input validation in Workers in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)
Official EUVD recordBSI · German · WID-SEC-W-2026-3013Google Chrome: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in Google Chrome ausnutzen, um beliebigen Programmcode auszuführen, Berechtigungen zu erweitern, Sicherheitsmaßnahmen zu umgehen, sensible Informationen offenzulegen, Spoofing-Angriffe durchzuführen, Daten zu manipulieren oder Denial-of-Service-Zustände zu verursachen.
Official advisoryCERT-FR · French · CERTFR-2026-AVI-1096Multiples vulnérabilités dans Microsoft Edge
août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79016 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79017 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79018 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79019 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79020 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79021 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79022 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79023 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79024 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79025 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79026 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79027 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79028 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79030 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79031 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79032 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79033 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79034 du 28 août 2026
Bulletin de sécurité Microsoft Edge CVE-2026-79038 du 28 août 2026
Bulletin de sécurité Microsoft
Official advisoryCERT-FR · French · CERTFR-2026-AVI-1081Multiples vulnérabilités dans Google Chrome
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
152.0.7977.65 < 152.0.7977.65
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 25 Aug 2026 · Last source change 31 Aug 2026, 16:05 UTC · CWE-20 · Improper Input Validation
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 2026-08-26
European sourceENISA EUVD · EUVD-2026-66016
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD enriched
Core structured fields are present and their contributing authorities are shown above.
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.
CVE-2026-79025: Google Chrome: Improper Input Validation | BlackTree
