Google Chrome FreeType Heap Buffer Overflow Vulnerability
Google Chrome uses FreeType, an open-source software library to render fonts, which contains a heap buffer overflow vulnerability in the function Load_SBit_Png when processing PNG images embedded into fonts. This vulnerability is part of an exploit chain with CVE-2020-17087 on Windows and CVE-2020-16010 on Android.
- Vendor
- Product
- Chrome FreeType
- CVSS
- 9.6
- EPSS (exploit probability)
- 63.9%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2020-15999 being exploited?
Yes. CISA added CVE-2020-15999 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 63.9% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-19. Full cross-catalog view: /kev-comparison
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (14 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
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| CVE-2026-106197 Use-after-free in Chrome Browser component enables sandbox RCEwrite-up | [ CRITICAL ] | 9.6 | 0.5% | — |
| CVE-2026-58704 Google Pixel Cellular Modem Improper Authorizationwrite-up | [ HIGH ] | 8.8 | 0.6% | |
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| CVE-2026-15765 Chrome Ozone use-after-freewrite-up | [ HIGH ] | 7.5 | 0.5% | — |