CVE-2026-16384: Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

highCVSS 7.5CVE-2026-16384

Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: high — CVSS 7.5
Published: 2026-07-21
Last updated: 2026-07-27
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-16384

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-163840.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-16384	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

high[NEW] [high] Mozilla Firefox and Firefox ESR: Multiple vulnerabilitiescert-bund
unknownMultiple vulnerabilities in Mozilla Thunderbird (July 23, 2026)cert-fr-avis
unknownMozilla Products Multiple Vulnerabilitieshkcert
unknownMultiple vulnerabilities in Mozilla products (July 22, 2026)cert-fr-avis

Recent advisories for Information disclosure due

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

mediumCVE-2025-14073: The WooCommerce PayPal Payments plugin for WordPress is vulnerable to Sensitive Information Di…nvd · 2026-08-01
highCVE-2026-16386: Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vul…nvd · 2026-07-21
highCVE-2026-16385: Information disclosure due to uninitialized memory in the Graphics: WebGPU component. This vul…nvd · 2026-07-21
mediumCVE-2026-20460: In Modem, there is a possible information disclosure due to improper input validation. This co…nvd · 2026-07-01
lowCVE-2026-56369: ImageMagick before 7.1.2-22 contains an information disclosure vulnerability in the PasskeyEnc…nvd · 2026-06-30
lowGHSA-6g26-7cx5-mrrg: Keycloak: Information disclosure due to user profile permission bypassghsa · 2026-06-05