CVE-2020-7856
CVE-2020-7856 is a high-severity vulnerability in Cnesty Helpcom with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 7.5
- EPSS exploit prediction: 1% (54th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-287
- Affected product: Cnesty Helpcom
- Published:
- Last modified:
Description
A vulnerability of Helpcom could allow an unauthenticated attacker to execute arbitrary command. This vulnerability exists due to insufficient authentication validation.
Frequently asked questions
- What is CVE-2020-7856?
- A vulnerability of Helpcom could allow an unauthenticated attacker to execute arbitrary command. This vulnerability exists due to insufficient authentication validation.
- How severe is CVE-2020-7856?
- CVE-2020-7856 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-7856 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-7856?
- CVE-2020-7856 affects Cnesty Helpcom. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-7856?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-7856 published?
- CVE-2020-7856 was published on 2021-04-20 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:cnesty:helpcom:*:*:*:*:*:*:*:*
More vulnerabilities in Cnesty Helpcom
- CVE-2020-7846 — High (CVSS 8.0): Helpcom before v10.0 contains a file download and execution vulnerability caused by storing hardcoded cryptographic…
- CVE-2020-7871 — High (CVSS 7.5): A vulnerability of Helpcom could allow an unauthenticated attacker to execute arbitrary command. This vulnerability…
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Other CWE-287 (Improper Authentication) vulnerabilities
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- CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
- CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
- CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
- CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…
Browse all CWE-287 (Improper Authentication) vulnerabilities →