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Full vulnerability report · 2026
CVE-2026-17673High confidence

Google Chrome — Integer Overflow or Wraparound

Google · Chrome

9.6CriticalCVSS 3.1
Recommended action
Within 7 days

Critical 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-2026-50799

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

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

Fix not verified
01

What, why and how

Integer overflow in QUIC in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

What

Integer overflow in QUIC in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

Why

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

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

Integer overflow in QUIC in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

Why

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

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 → Integer Overflow or Wraparound → 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
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-190

CWE-190: Integer Overflow or Wraparound. The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

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:C/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.SChangedScope: The attack can affect a component governed by a different security 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
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-190
A

Official authority intelligence

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

BSI · German · WID-SEC-2026-2579Google Chrome/Microsoft Edge: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Google Chrome/Microsoft Edge ausnutzen, um beliebigen Code auszuführen, vertrauliche Informationen offenzulegen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder einen Denial-of-Service-Zustand herbeizuführen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260805Security Bulletin 5 Aug 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 5 Aug 2026, published on 5 August 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0960Multiples vulnérabilités dans Microsoft Edge

rité Microsoft Edge CVE-2026-17664 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17665 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17666 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17667 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17668 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17669 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17670 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17671 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17672 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17673 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17674 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17675 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17676 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17677 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17678 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17679 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17680 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17681 du 31 juillet 2026 Bulletin de sécurité Microsoft Edge CVE-2026-17682 du 31 juillet 2026

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0945Multiples vulnérabilités dans Google Chrome

d?id=CVE-2026-17664 Référence CVE CVE-2026-17665 https://www.cve.org/CVERecord?id=CVE-2026-17665 Référence CVE CVE-2026-17666 https://www.cve.org/CVERecord?id=CVE-2026-17666 Référence CVE CVE-2026-17667 https://www.cve.org/CVERecord?id=CVE-2026-17667 Référence CVE CVE-2026-17668 https://www.cve.org/CVERecord?id=CVE-2026-17668 Référence CVE CVE-2026-17669 https://www.cve.org/CVERecord?id=CVE-2026-17669 Référence CVE CVE-2026-17670 https://www.cve.org/CVERecord?id=CVE-2026-17670 Référence CVE CVE-2026-17671 https://www.cve.org/CVERecord?id=CVE-2026-17671 Référence CVE CVE-2026-17672 https://www.cve.org/CVERecord?id=CVE-2026-17672 Référence CVE CVE-2026-17673 https://www.cve.org/CVERecord?id=CVE-2026-17673 Référence CVE CVE-2026-17674 https://www.cve.org/CVERecord?id=CVE-2026-17674 Référence CVE CVE-2026-17675 https://www.cve.org/CVERecord?id=CVE-2026-17675 Référence CVE CVE-2026-17676 https://www.cve.org/CVERecord?id=CVE-2026-17676 Référence CVE CVE-2026-17677 https://www.cve.org/CVERecord?id=CVE-2026-17677 Référence CVE CVE-2026-17678 https://www.cve.org/CVERecord?id=CVE-2026-17678 Référence CVE CVE-2026-17679 https://www.cve.org/CVERecord?id=CVE-2026-17679 Référence CVE CVE-2026-17680 https://www.cve.org/CVERecord?id=CVE-2026-17680 Référence CVE CVE-2026-17681 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-026608GoogleのGoogle Chromeにおける整数オーバーフローの脆弱性

151.0.7922.72以前のGoogle ChromeのQUICにおける整数オーバーフローにより、リモート攻撃者がレンダラープロセスを侵害し、細工されたHTMLページを介してサンドボックスを脱出する可能性がありました。(Chromiumのセキュリティ重大度は高です)

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
Chrome: 151.0.7922.72 < 151.0.7922.72
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 30 Jul 2026 · Last source change 30 Jul 2026, 17:38 UTC · CWE-190 · Integer Overflow or Wraparound

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-2026-50799
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-2026-17673 · cve.blacktree.nl