CVE-2020-36911
CVE-2020-36911 is a critical-severity vulnerability in Cobbr Covenant with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 10% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-798.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v4: 9.3
- EPSS exploit prediction: 10% (95th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-2654
- Weakness: CWE-798
- Affected product: Cobbr Covenant
- Published:
- Last modified:
Description
Covenant 0.1.3 - 0.5 contains a remote code execution vulnerability that allows attackers to craft malicious JWT tokens with administrative privileges. Attackers can generate forged tokens with admin roles and upload custom DLL payloads to execute arbitrary commands on the target system.
Frequently asked questions
- What is CVE-2020-36911?
- Covenant 0.1.3 - 0.5 contains a remote code execution vulnerability that allows attackers to craft malicious JWT tokens with administrative privileges. Attackers can generate forged tokens with admin roles and upload custom DLL payloads to execute arbitrary commands on the target system.
- How severe is CVE-2020-36911?
- CVE-2020-36911 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-36911 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-36911?
- CVE-2020-36911 affects Cobbr Covenant. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-36911?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2020-36911 have an EU (EUVD) identifier?
- Yes. CVE-2020-36911 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2654.
- When was CVE-2020-36911 published?
- CVE-2020-36911 was published on 2026-01-13 and last updated on 2026-06-17.
References
- https://cobbr.io/Covenant.html
- https://github.com/Zeop-CyberSec/covenant_rce/blob/master/covenant_jwt_rce.rb
- https://github.com/cobbr/Covenant
- https://web.archive.org/web/20201013165001/https://twitter.com/cobbr_io/status/1316058367161401344
- https://web.archive.org/web/20201101052547/https://blog.null.farm/hunting-the-hunters
- https://www.exploit-db.com/exploits/51141
- https://www.vulncheck.com/advisories/covenant-remote-code-execution-rce
Affected products (1)
- cpe:2.3:a:cobbr:covenant:*:*:*:*:*:*:*:*
Other CWE-798 (Use of Hard-coded Credentials) vulnerabilities
- CVE-2026-13768 — Critical (CVSS 10.0): Gardyn devices expose a privileged iothubowner key. Access to this key will allow a malicious user to invoke an IoTHub…
- CVE-2026-45631 — Critical (CVSS 10.0): Dokploy is a free, self-hostable Platform as a Service (PaaS). From 0.27.0 to before 0.29.3, a hardcoded…
- CVE-2026-22769 — Critical (CVSS 10.0): Dell RecoverPoint for Virtual Machines, versions prior to 6.0.3.1 HF1, contain a hardcoded credential vulnerability.…
- CVE-2025-42890 — Critical (CVSS 10.0): SQL Anywhere Monitor (Non-GUI) baked credentials into the code,exposing the resources or functionality to unintended…
- CVE-2025-7503 — Critical (CVSS 10.0): An OEM IP camera manufactured by Shenzhen Liandian Communication Technology LTD exposes a Telnet service (port 23) with…
- CVE-2025-20309 — Critical (CVSS 10.0): A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session…
Browse all CWE-798 (Use of Hard-coded Credentials) vulnerabilities →