CVE-2026-2966
A weakness has been identified in Cesanta Mongoose up to 7.20.
Does this matter?
Lower severity and a low EPSS score (0.44%). Track it; it rarely justifies an emergency change on its own.
Description
A weakness has been identified in Cesanta Mongoose up to 7.20. The impacted element is the function mg_sendnsreq of the file /src/dns.c of the component DNS Transaction ID Handler. Executing a manipulation of the argument random can lead to insufficiently random values. The attack can be launched remotely. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
- CVSS 4.0
- 2.9 LOWCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.44% probability · 38th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-310, CWE-330
- Affected
- cesanta/mongoose
- Source
- cna@vuldb.com
EPSS 0.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/dwBruijn/CVEs/blob/main/Mongoose/mg_sendnsreq.mdExploit, Third Party Advisory
- https://github.com/dwBruijn/CVEs/blob/main/Mongoose/mg_sendnsreq.md#pocExploit, Third Party Advisory
- https://vuldb.com/?ctiid.347333Permissions Required, VDB Entry
- https://vuldb.com/?id.347333Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.755304Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.