Mongoose Web Server 6.9 Denial of Service via Socket Connection
Published Mar 6, 2026
8.7
HIGHCVSS 4.0
EPSS 0.34%
Description
Mongoose Web Server 6.9 contains a denial of service vulnerability that allows remote attackers to crash the service by establishing multiple socket connections. Attackers can repeatedly create connections to the default port and send malformed data to exhaust server resources and cause service unavailability.
Affected products
-
- Version 6.9StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Cesanta | Mongoose Web Server | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Mar 9, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
Mar–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.34% (0.00339) | 25.02th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.34% (0.00339) | 25.50th | v5 (v2026.06.15) |
| Mar 7, 2026 | 0.10% (0.00099) | 27.12th | v4 (v2025.03.14) |
References (2)
- https://www.exploit-db.com/exploits/45819 exploit
- https://www.vulncheck.com/advisories/mongoose-web-server-denial-of-service-via-socket-connection third-party-advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.exploit-db.com/exploits/45819 | exploit | |
| https://www.vulncheck.com/advisories/mongoose-web-server-denial-of-service-via-socket-connection | third-party-advisory |
Change history (0)
No recorded changes yet.