CVE-2021-26419 in the critical feed json
Scripting Engine Memory Corruption Vulnerability
published 2021-05-11 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13225
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 22.8%
- EPSS 22.8% chance of exploitation in 30 days, percentile 97%
- public exploits
- 0
- none known
Summary
Scripting Engine Memory Corruption Vulnerability
Patch / fix
- Microsoft Internet Explorer 11 6.1, 6.1.7601.24597, 6.2, 6.2.9200.23347, 6.3.9600.20016, 6.3.9600.20017, 10.0.10240.18931, 10.0.14393.4401, 10.0.17134.2207, 10.0.17763.1935, 10.0.18363.1556, 10.0.19041.982
- Microsoft Internet Explorer 9 6.0, 6.0.6003.21117
Exploit prediction
22.77% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- packetstormsecurity.com http://packetstormsecurity.com/files/162570/Internet-Explorer-jscript9.dll-Memory-Corruption.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.6 | AV:N/AC:H/Au:N/C:C/I:C/A:C |
Affected products
- Microsoft Internet Explorer 11
- Microsoft Internet Explorer 9
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2021-26419
patch, vendor-advisory
-
packetstormsecurity.com
/files/162570/Internet-Explorer-jscript9.dll-Memory-Corruption.html
exploit, third-party-advisory
Sources
- CVE List CVE-2021-26419
- NVD CVE-2021-26419
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