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CVE-2019-20502

24
FAUCET Score

CVE-2019-20502 describes a buffer overflow vulnerability in EFS Easy Chat Server 3.1, specifically exploitable through a long 'body2.ghp' message parameter. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating it can be exploited remotely with low complexity, leading to a high impact on availability, though without affecting confidentiality or integrity. While no active exploitation, public exploit code, or significant community discussion has been observed, organizations using the affected software should be aware of this potential risk.

Impacted Technologies

VendorProductVersion(s)CPE
3.1CPE matchmatch criteria
cpe:2.3:a:echatserver:easy_chat_server:3.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.11%
Probability of exploitation in next 30 days
EPSS Percentile
62.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0111 is in the 40th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / s1kr10s/EasyChatServer-DOS
ExploitThird Party Advisory