Medium severity · published Oct 20, 2021
CVE-2021-21743
ZTE MF971R product has a CRLF injection vulnerability
4.3
CVSS
0.8%
EPSS
No
On KEV
Description
ZTE MF971R product has a CRLF injection vulnerability. An attacker could exploit the vulnerability to modify the HTTP response header information through a specially crafted HTTP request.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MF
Mf971r Firmware · Zte
v1.0.0b05; 1v1.0.0b06; 2v1.0.0b03; s2v1.0.0b03; sv1.0.0b05 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21743
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21743
Vendor Advisory
https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1019764
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