CVE-2017-7185
Use-after-free vulnerability in the mg_http_multipart_wait_for_boundary function in mongoose.c in Cesanta Mongoose Embedded Web Server Library 6.7 and earlier and Mongoose OS 1.2 and earlier allows remote attackers to cause a denial of service (crash)…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 12.3%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.
Description
Use-after-free vulnerability in the mg_http_multipart_wait_for_boundary function in mongoose.c in Cesanta Mongoose Embedded Web Server Library 6.7 and earlier and Mongoose OS 1.2 and earlier allows remote attackers to cause a denial of service (crash) via a multipart/form-data POST request without a MIME boundary string.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 12.25% probability · 96th percentile
- Public exploits
- 1 in Exploit-DB · first 6 April 2017
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- cesanta/mongoose embedded web server library · cesanta/mongoose os
- Source
- cve@mitre.org
EPSS moved from 10.6% on 21 September 2026 to 12.3% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://www.securityfocus.com/archive/1/540355/100/0/threaded
- http://www.securityfocus.com/bid/97370Third Party Advisory, VDB Entry
- https://github.com/cesanta/mongoose-os/commit/042eb437973a202d00589b13d628181c6de5cf5bPatch, Third Party Advisory
- https://github.com/cesanta/mongoose/commit/b8402ed0733e3f244588b61ad5fedd093e3cf9ccPatch, Third Party Advisory
- https://www.compass-security.com/fileadmin/Datein/Research/Advisories/CVE-2017-7185_mongoose_os_use_after_free.txtExploit, Technical Description, Third Party Advisory
- https://www.exploit-db.com/exploits/41826/
- http://www.securityfocus.com/archive/1/540355/100/0/threaded
- http://www.securityfocus.com/bid/97370Third Party Advisory, VDB Entry
- https://github.com/cesanta/mongoose-os/commit/042eb437973a202d00589b13d628181c6de5cf5bPatch, Third Party Advisory
- https://github.com/cesanta/mongoose/commit/b8402ed0733e3f244588b61ad5fedd093e3cf9ccPatch, Third Party Advisory
- https://www.compass-security.com/fileadmin/Datein/Research/Advisories/CVE-2017-7185_mongoose_os_use_after_free.txtExploit, Technical Description, Third Party Advisory
- https://www.exploit-db.com/exploits/41826/
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.