CVE-2021-26439: microsoft edge
CVSS: 4.6v3.1MediumModified
Published 02-09-2021Last modified 10-08-2026
Vulnerability summary
CVE-2021-26439 is a medium (CVSS 4.6) vulnerability in microsoft edge. EPSS estimates a 2.92% chance of exploitation in the next 30 days, higher than 86.8% of scored vulnerabilities.
CVSS score
4.6/10
010
Medium · v3.1 (CVE.org)EPSS score
2.92%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 02-09-2021PublishedVulnerability first disclosed.
- 10-08-2026Last modifiedVulnerability information updated.
Description
Microsoft Edge for Android Information Disclosure Vulnerability
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 4.6Preferred score · CVE.org (CNA)
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:CSourcesAll 2 agree
- NVDNIST4.6MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
2.92%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
+0.02 pp
From 2.89% on 19-09-2026
19-09-202619-10-2026
EPSS score2.92%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Microsoft2 products
- edge< 93.0.961.38
- microsoft edge for android≥ 1.0.0, < 93.0.961.38
1 vendor · 2 products
References
2 links- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26439X Refsource MISCX TransferredPatchVendor Advisory