CVE-2021-26691
high-risk
Published 2021-06-10
In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server could cause a heap overflow
Do I need to act?
!
40.4% chance of exploitation in next 30 days
EPSS score — higher than 60% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (12)
Affected Vendors
References (26)
Vendor Advisory
http://httpd.apache.org/security/vulnerabilities_24.html
Third Party Advisory
https://security.gentoo.org/glsa/202107-38
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210702-0001/
Mailing List
https://www.debian.org/security/2021/dsa-4937
Vendor Advisory
http://httpd.apache.org/security/vulnerabilities_24.html
and 6 more references
66
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
17/34 · Moderate
Exposure
17/34 · Moderate