CVE-2020-15999
CriticalExploitedPublic exploitHeap buffer overflow in CefSharp
Published Oct 27, 2020 · Updated Oct 14, 2026 · Also known as A-171232105, ALPINE-CVE-2020-15999, ASB-A-171232105, DEBIAN-CVE-2020-15999, DLA-2415-1, DSA-4777-1, GHSA-pv36-h7jh-qm62, JLSEC-2026-456, SUSE-SU-2020:14548-1, SUSE-SU-2020:2995-1, SUSE-SU-2020:2998-1, SUSE-SU-2020:3383-1, SUSE-SU-2020:3458-1, SUSE-SU-2020:3528-1, SUSE-SU-2020:3548-1, TR-21-0235, UBUNTU-CVE-2020-15999, USN-4593-1, USN-4593-2
Key Facts
Patch immediately- CVE-2020-15999 is a critical-severity vulnerability (CVSS 9.6 v3.1) affecting Freetype, Chrome (Google), Ontap Select Deploy Administration Utility (Netapp) and 22 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 19, 2020. Public exploit code is available.
- EPSS estimates a 64% probability of exploitation in the next 30 days.
- Fixed versions are available, including CefSharp.Common 85.3.130, CefSharp.WinForms 85.3.130, CefSharp.Wpf 85.3.130.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
64%
Higher than 99.2% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2020-15999 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Heap buffer overflow in Freetype in Google Chrome prior to 86.0.4240.111 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Nov 3, 2021 | Nov 17, 2021 | Not reported |
| Industry KEV feed | Oct 19, 2020 | Nov 17, 2021 | Not reported |
| CIRCL KEV | Nov 3, 2021 | Nov 17, 2021 | Not reported |
| ENISA EUVD | Nov 3, 2021 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
429 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| FreetypeFreetype | See advisory | 2.10.4 |
| ChromeGoogle | >= unspecified | 86.0.4240.111 |
| Ontap Select Deploy Administration UtilityNetapp | See advisory | n/a |
| Backports SleOpensuse | 15.0-sp2 | n/a |
| Debian LinuxDebian | 10.0 | n/a |
Patched Releases
CefSharp.Common
85.3.130
CefSharp.WinForms
85.3.130
CefSharp.Wpf
85.3.130
CefSharp.Wpf.HwndHost
85.3.130
Chrome
86.0.4240.111
chromedriver
86.0.4240.111-bp151.3.116.1, 86.0.4240.111-lp151.2.147.1, 86.0.4240.111-lp152.2.42.1, 86.0.4240.183-bp152.2.26.1, 93.0.4577.82-1.1
chromium
86.0.4240.111-bp151.3.116.1, 86.0.4240.111-lp151.2.147.1, 86.0.4240.111-lp152.2.42.1, 86.0.4240.183-bp152.2.26.1, 87.0.4280.88-0.4~deb10u1, 93.0.4577.82-1.1
chromium-browser
0:86.0.4240.111-1.el6_10, 86.0.4240.198-0ubuntu0.16.04.1, 86.0.4240.198-0ubuntu0.18.04.1
firefox
83.0-1, 83.0-r0
firefox-esr
128.5.1-1.1, 78.5.0-r0
firefox-esr-branding-upstream
128.5.1-1.1
firefox-esr-translations-common
128.5.1-1.1
firefox-esr-translations-other
128.5.1-1.1
Freetype
0:2.8-14.el7_9.1, 0:2.9.1-4.el8_3.1, 2.10.0-r1, 2.10.1-2ubuntu0.1, 2.10.1-r1, 2.10.2+dfsg-4, 2.10.4-r0, 2.11.0-3.amzn2022, 2.11.0-6.amzn2022.0.1, 2.11.1-1, 2.12.1-3.amzn2023.0.1, 2.3.11-19.el6_10+sp999, 2.5.2-1ubuntu2.8+esm2, 2.6.1-0.1ubuntu2.5, 2.6.3-3.2+deb9u2, 2.8-14.amzn2.1, 2.8-14.el7_9.1, 2.8-14.el7_9.1+sp999, 2.8.1-2ubuntu2.1, 2.9.1-3+deb10u2, 2.9.1-4.el8_3.1, 2.9.1-r3, 2.10.4
freetype-demos
2.11.0-3.amzn2022, 2.11.0-6.amzn2022.0.1, 2.12.1-3.amzn2023.0.1, 2.8-14.amzn2.1, 2.8-14.el7_9.1
freetype-devel
2.11.0-3.amzn2022, 2.11.0-6.amzn2022.0.1, 2.12.1-3.amzn2023.0.1, 2.8-14.amzn2.1, 2.8-14.el7_9.1, 2.9.1-4.el8_3.1
freetype2
2.10.1-4.8.1, 2.10.2-3.ph4, 2.10.4-1, 2.6.3-7.18.1, 2.7.1-6.ph2, 2.7.1-7.ph1, 2.9.1-2.ph3
FreeType2_jll
2.10.4+0
freetype2-devel
2.10.1-4.8.1, 2.10.1-lp151.4.6.1, 2.10.1-lp152.2.5.1, 2.10.2-3.ph4, 2.11.0-1.2, 2.6.3-7.18.1
freetype2-devel-32bit
2.10.1-lp151.4.6.1, 2.10.1-lp152.2.5.1, 2.11.0-1.2
freetype2-profile-tti35
2.10.1-lp151.4.6.1, 2.10.1-lp152.2.5.1, 2.11.0-1.2
ft2demos
2.10.1-4.8.1, 2.10.1-lp151.4.6.1, 2.10.1-lp152.2.5.1, 2.6.3-7.18.1
ftbench
2.10.1-lp151.4.6.1, 2.10.1-lp152.2.5.1
ftdiff
2.10.1-lp151.4.6.1, 2.10.1-lp152.2.5.1
ftdump
2.10.1-4.8.1, 2.10.1-lp151.4.6.1, 2.10.1-lp152.2.5.1
Timeline
Added to Industry KEV feed
Oct 19, 2020
Publicly disclosed
Oct 27, 2020
Added to CISA KEV
Nov 3, 2021
Added to CIRCL KEV
Nov 3, 2021
Added to ENISA EUVD
Nov 3, 2021
Last updated
Oct 14, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
- CWE-190 Integer Overflow or Wraparound
- CWE-787 Out-of-bounds Write
References
- advisoryRHSA-2020:4351
- advisoryRHSA-2020:4907
- advisoryRHSA-2020:4949
- advisoryRHSA-2020:4950
- advisoryRHSA-2020:4951
FAQ
Common Questions.
Heap buffer overflow in Freetype in Google Chrome prior to 86.0.4240.111 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Affected: Freetype; Chrome (Google) versions >= unspecified; Ontap Select Deploy Administration Utility (Netapp), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 19, 2020.
Yes. It was added on Nov 3, 2021 with a federal remediation due date of Nov 17, 2021.
Public exploit code is available.
Fixed versions are available, including CefSharp.Common 85.3.130, CefSharp.WinForms 85.3.130, CefSharp.Wpf 85.3.130.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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