Out-of-bounds Read in Mozilla Firefox

CVE-2017-7774

Out-of-bounds read in Graphite2 Library in Firefox before 54 in graphite2::Silf::readGraphite function.

Vulnerability class: Buffer Overflow

EPSS: 0.014 (70.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

Mozilla Firefox — versions All versions prior to Firefox 54
Sil Graphite2

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

security@mozilla.org (x_refsource_CONFIRM, Exploit, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2017-7774?: CVE-2017-7774 is a critical-severity vulnerability in Mozilla Firefox, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2019-04-15.
How severe is CVE-2017-7774?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2017-7774 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.