CVE-2020-20979
CVE-2020-20979 is a critical-severity vulnerability in 8cms Ljcms with a CVSS 3.x base score of 9.8. 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-434.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (73rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-434
- Affected product: 8cms Ljcms
- Published:
- Last modified:
Description
An arbitrary file upload vulnerability in the move_uploaded_file() function of LJCMS v4.3 allows attackers to execute arbitrary code.
Frequently asked questions
- What is CVE-2020-20979?
- An arbitrary file upload vulnerability in the move_uploaded_file() function of LJCMS v4.3 allows attackers to execute arbitrary code.
- How severe is CVE-2020-20979?
- CVE-2020-20979 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-2020-20979 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-20979?
- CVE-2020-20979 affects 8cms Ljcms. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-20979?
- 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.
- When was CVE-2020-20979 published?
- CVE-2020-20979 was published on 2021-08-12 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:8cms:ljcms:4.3.-:*:*:*:*:*:*:*
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