CVE-2019-20502
CVE-2019-20502 is a high-severity vulnerability in Echatserver Easy Chat Server 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-120.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (62nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-120
- Affected product: Echatserver Easy Chat Server
- Published:
- Last modified:
Description
An issue was discovered in EFS Easy Chat Server 3.1. There is a buffer overflow via a long body2.ghp message parameter.
Frequently asked questions
- What is CVE-2019-20502?
- An issue was discovered in EFS Easy Chat Server 3.1. There is a buffer overflow via a long body2.ghp message parameter.
- How severe is CVE-2019-20502?
- CVE-2019-20502 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2019-20502 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-20502?
- CVE-2019-20502 affects Echatserver Easy Chat Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-20502?
- 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-2019-20502 published?
- CVE-2019-20502 was published on 2020-03-05 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:echatserver:easy_chat_server:3.1:*:*:*:*:*:*:*
More vulnerabilities in Echatserver Easy Chat Server
- CVE-2018-25221 — Critical (CVSS 9.8): EChat Server 3.1 contains a buffer overflow vulnerability in the chat.ghp endpoint that allows remote attackers to…
- CVE-2017-9544 — Critical (CVSS 9.8): There is a remote stack-based buffer overflow (SEH) in register.ghp in EFS Software Easy Chat Server versions 2.0 to…
- CVE-2022-44939 — High (CVSS 7.8): Efs Software Easy Chat Server Version 3.1 was discovered to contain a DLL hijacking vulnerability via the component…
- CVE-2019-25613 — High (CVSS 7.5): Easy Chat Server 3.1 contains a denial of service vulnerability that allows remote attackers to crash the application…
- CVE-2017-9557 — High (CVSS 7.5): register.ghp in EFS Software Easy Chat Server versions 2.0 to 3.1 allows remote attackers to discover passwords by…
- CVE-2017-9543 — High (CVSS 7.5): register.ghp in EFS Software Easy Chat Server versions 2.0 to 3.1 allows remote attackers to reset arbitrary passwords…
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