PatchSiren cyber security CVE debrief
CVE-2020-15999 Google CVE debrief
CVE-2020-15999 is a Google Chrome FreeType heap buffer overflow vulnerability that CISA included in its Known Exploited Vulnerabilities catalog. The KEV listing means defenders should treat it as a priority patch item, not a routine maintenance issue. CISA’s catalog directs organizations to apply updates per vendor instructions, and the remediation deadline in the supplied timeline is 2021-11-17.
- Vendor
- Product
- Chrome FreeType
- CVSS
- Unknown
- CISA KEV
- Listed
- Original CVE published
- 2021-11-03
- Original CVE updated
- 2021-11-03
- Advisory published
- 2021-11-03
- Advisory updated
- 2021-11-03
Who should care
Organizations running Google Chrome on managed endpoints, virtual desktops, or shared workstations should prioritize this issue. Security operations, vulnerability management, and endpoint administration teams should confirm that all Chrome installations receive the vendor fix and that update enforcement is working.
Technical summary
The supplied official records describe a heap buffer overflow in FreeType as used by Google Chrome. CISA’s KEV catalog records this vulnerability as known to be exploited and links to the official CVE and NVD entries for reference. The provided corpus does not include a CVSS score or additional exploit mechanics, so defensive handling should rely on the KEV status and vendor patch guidance.
Defensive priority
High. CISA has listed CVE-2020-15999 in the KEV catalog, which is a strong signal to expedite patching and verification across the fleet.
Recommended defensive actions
- Apply the Google Chrome update or vendor-provided remediation that addresses CVE-2020-15999 on all affected systems.
- Verify coverage across desktops, laptops, VDI, and any managed Chrome deployments, including systems that may not be actively used every day.
- Use the CISA KEV due date of 2021-11-17 as the remediation target and escalate any systems that miss it.
- Re-scan for vulnerable Chrome versions after patching and confirm that auto-update or software management policies are enforcing the fix.
Evidence notes
This debrief is based only on the supplied CISA KEV source item and the official CVE/NVD resource links. The corpus confirms the vulnerability name, KEV status, date added, due date, and required action to apply updates per vendor instructions. The supplied data does not include a CVSS score or further technical exploit details.
Official resources
-
CVE-2020-15999 CVE record
CVE.org
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CVE-2020-15999 NVD detail
NVD
-
CISA Known Exploited Vulnerabilities catalog
CISA - Apply updates per vendor instructions.
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Source item URL
cisa_kev
CISA added CVE-2020-15999 to the Known Exploited Vulnerabilities catalog on 2021-11-03 and set the remediation due date to 2021-11-17.