Buffer overflow in Microsoft Internet_explorer
CVE-2021-26419
Scripting Engine Memory Corruption Vulnerability
Vulnerability class: Buffer Overflow
EPSS: 0.226 (97.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Internet_explorer — versions 11, 9
- Microsoft Internet Explorer 11 — versions 1.0.0
- Microsoft Internet Explorer 9 — versions 1.0.0
- Microsoft Windows_10 — versions 20h2, 1607, 1803
- Microsoft Windows_7
- Microsoft Windows_8.1
- Microsoft Windows_rt_8.1
- Microsoft Windows_server_2008 — versions r2
- Microsoft Windows_server_2012 — versions r2
- Microsoft Windows_server_2016
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
- secure@microsoft.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-26419?
- CVE-2021-26419 is a high-severity vulnerability in Microsoft Internet_explorer, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2021-05-11.
- How severe is CVE-2021-26419?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-26419 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.