What is CVE-2021-20783?

CVE-2021-20783 is a high-severity vulnerability in Softbank Optical Bb Unit E-Wmta, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-07-30.

How severe is CVE-2021-20783?

High severity. CVSS v3 base score is 8.8 out of 10.

CSRF in Softbank Optical Bb Unit E-Wmta

CVE-2021-20783

Cross-site request forgery (CSRF) vulnerability in Optical BB unit E-WMTA2.3 allows a remote attacker to hijack the authentication of administrators via a specially crafted page.

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.006 (43.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Softbank Optical_bb_unit_e-wmta
Softbank Optical Bb Unit E-wmta2.3 — versions all versions
Softbank Optical_bb_unit_e-wmta_firmware — versions 2.3

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

vultures@jpcert.or.jp (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-20783?: CVE-2021-20783 is a high-severity vulnerability in Softbank Optical Bb Unit E-Wmta, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-07-30.
How severe is CVE-2021-20783?: High severity. CVSS v3 base score is 8.8 out of 10.