CVE-2017-5447
An out-of-bounds read during the processing of glyph widths during text layout. This results in a potentially exploitabl
An out-of-bounds read during the processing of glyph widths during text layout. This results in a potentially exploitable crash and could allow an attacker to read otherwise inaccessible memory. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.
CRITICAL · CVSS 9.1
EPSS 0.10983
Act now
- EPSS ≥ 0.10 - elevated exploitation probability
- EPSS percentile: top 6% of all CVEs by exploitation likelihood
- Public exploit or PoC is available
- CVSS base score ≥ 7.0
Sigma rules1
YARA rules0