Critical severity · published Feb 8, 2021
CVE-2021-26530
The mg_tls_init function in Cesanta Mongoose HTTPS server 7.0 (compiled with OpenSSL support) is vulnerable to remote OOB write attack via connection request after exhausting…
9.1
CVSS
1.5%
EPSS
No
On KEV
Description
The mg_tls_init function in Cesanta Mongoose HTTPS server 7.0 (compiled with OpenSSL support) is vulnerable to remote OOB write attack via connection request after exhausting memory pool.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
Mongoose · Cesanta
7.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26530
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26530
Exploit
https://github.com/cesanta/mongoose/issues/1204
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