Buffer overflow in ZTE Mf971r

CVE-2021-21748

ZTE MF971R product has two stack-based buffer overflow vulnerabilities. An attacker could exploit the vulnerabilities to execute arbitrary code.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.018 (78.1th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-21748: held from 0.018 to 0.018.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

  • ZTE Mf971r
  • ZTE Mf971r Firmware — versions v1.0.0b05, 1v1.0.0b06, 2v1.0.0b03
  • Mf971r — versions BD_ZTE_MF971RV1.0.0B05, BD_PLKPLMF971R1V1.0.0B06, BD_MF971R2V1.0.0B03, BD_ZTE_MF971RS2V1.0.0B03, BD_ZTE_MF971RSV1.0.0B05

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-21748?
CVE-2021-21748 is a critical-severity vulnerability in ZTE Mf971r, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2021-10-20.
How severe is CVE-2021-21748?
Critical severity. CVSS v3 base score is 9.8 out of 10.