Buffer overflow in Microsoft Chakracore
CVE-2020-0878
<p>A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory. The vulnerability could corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the curre…
Vulnerability class: Buffer Overflow
EPSS: 0.027 (84.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.
Affected products
- Microsoft Chakracore — versions 0
- Microsoft Edge
- Microsoft Internet_explorer — versions 11, 9
- Microsoft Internet Explorer 11 — versions 1.0.0
- Microsoft Internet Explorer 9 — versions 1.0.0
- Microsoft Edge (Edgehtml-based) — versions 1.0..0
- Microsoft Windows_10_1507
- Microsoft Windows_10_1607
- Microsoft Windows_10_1709
- Microsoft Windows_10_1803
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Known ransomware campaign use: yes.
Public proof-of-concept exploits
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2020-0878?
- CVE-2020-0878 is a medium-severity vulnerability in Microsoft Chakracore, classified under Out-of-bounds Write. CVSS score: 4.2/10. Published 2020-09-11.
- How severe is CVE-2020-0878?
- Medium severity. CVSS v3 base score is 4.2 out of 10.
- Is CVE-2020-0878 known to be exploited?
- Yes. CVE-2020-0878 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.