High severity · published Oct 5, 2021
CVE-2021-31987
A user controlled parameter related to SMTP test functionality is not correctly validated making it possible to bypass blocked network recipients
7.5
CVSS
0.9%
EPSS
No
On KEV
Description
A user controlled parameter related to SMTP test functionality is not correctly validated making it possible to bypass blocked network recipients.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AO
Axis OS · Axis
before 10.8 · source: NVD
AO
Axis OS 2016 · Axis
before 6.50.5.5 · source: NVD
AO
Axis OS 2018 · Axis
before 8.40.4.3 · source: NVD
AO
Axis OS 2020 · Axis
before 9.80.3.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-31987
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-31987
Vendor Advisory
https://www.axis.com/files/tech_notes/CVE-2021-31987.pdf
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