Medium severity · published Nov 19, 2019
CVE-2011-4968
nginx http proxy module does not verify peer identity of https origin server which could facilitate man-in-the-middle attack (MITM)
4.8
CVSS
4%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.0% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0 · source: NVD
NG
Nginx · F5
0.7.61; 0.7.62; 0.7.64; 0.7.65; 0.7.66; 0.8.33; +4 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2011-4968
CVE.org
https://www.cve.org/CVERecord?id=CVE-2011-4968
Mailing List
http://www.openwall.com/lists/oss-security/2013/01/03/8
Third Party Advisory
http://www.securityfocus.com/bid/57139
Broken Link
https://access.redhat.com/security/cve/cve-2011-4968
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4968
Issue Tracking
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2011-4968
Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/80952
More from Debian Linux
10.0
CVE-2025-32433
Erlang/OTP SSH Vulnerable to Pre-Authentication RCE
10.0
CVE-2025-24201
Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
10.0
CVE-2021-44228
Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints
10.0
CVE-2015-3306
ProFTPD Improper Access Control Vulnerability
9.8
CVE-2026-24061
GNU InetUtils Argument Injection Vulnerability