CVE-2026-15718

VendormozillaProductfirefoxDiscoveredJul 14, 2026UpdatedJul 22, 2026

We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6, Firefox ESR 140.13, and Thunderbird 140.13.

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CVSS v3.1

4.3 MEDIUM

EPSS

0.32%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

EPSS Trend

Aug 16, 2026 → Oct 26, 2026

▼ 0.06pp

0.38% → 0.32% over 3 tracked changes

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

ScopeUNCHANGED

ConfidentialityLOW

IntegrityNONE

AvailabilityNONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Connections

3 relationships

CWE-763

source

Timeline

disclosure → media coverage

Jul 14, 2026

Disclosure — published as a CVE record. · last revised by NVD Jul 22, 2026

Jul 15, 2026

thehackernews.com reports: Firefox, Chrome, Adobe, and VMware Updates Fix Multiple Critical Security Flaws

Public PoC (1)

github.com/SneakyNachos/CVE-2026-15718-who-put-ptrs-in-my-wasm

Unverified third-party code — review before executing.