Is CVE-2021-36777 actively exploited?

No active exploitation of CVE-2021-36777 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-36777 be exploited remotely?

Yes. CVE-2021-36777 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-36777?

CVE-2021-36777 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2021-36777

CWE-807Published: March 9, 2022· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

A Reliance on Untrusted Inputs in a Security Decision vulnerability in the login proxy of the openSUSE Build service allowed attackers to present users with a expected login form that then sends the clear text credentials to an attacker specified server. This issue affects: openSUSE Build service login-proxy-scripts versions prior to dc000cdfe9b9b715fb92195b1a57559362f689ef.

NVD Source

Technical Analysis

CVE-2021-36777 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.