CVE-2021-21743
Published: 20 October 2021
Summary
CVE-2021-21743 is a medium-severity Injection (CWE-74) vulnerability in Zte Mf971R Firmware. Its CVSS base score is 4.3 (Medium).
Operationally, ranked at the 44.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-8915
Vulnerability details
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.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Developer assessments and testing (including injection-focused techniques) identify improper neutralization of special elements, and the verifiable flaw remediation corrects them pre-deployment.
Identifies indicators of injection attacks (command, SQL, LDAP, etc.) via anomaly and attack monitoring.