CVE-2025-12199
dnsmasq Config File network.c check_servers null pointer dereference
Description
Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: Based on the analysis by MITRE and review of community feedback, the reported conditions represent expected and intentional behavior within dnsmasq's documented design, rather than security vulnerabilities.
INFO
Published Date :
Oct. 27, 2025, 1:15 a.m.
Last Modified :
Nov. 3, 2025, 11:17 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update dnsmasq to a version beyond 2.73rc6.
- Apply vendor patches when available.
- Monitor for vendor advisories.
- Review access controls for local systems.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-12199 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-12199 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
Nov. 03, 2025
Action Type Old Value New Value Removed Tag VulDB: disputed Changed Description A vulnerability was found in dnsmasq up to 2.73rc6. Affected by this vulnerability is the function check_servers of the file src/network.c of the component Config File Handler. The manipulation results in null pointer dereference. The attack needs to be approached locally. The exploit has been made public and could be used. It is still unclear if this vulnerability genuinely exists. This attack requires manipulating config files which might not be a realistic scenario in many cases. The vendor was contacted early about this disclosure but did not respond in any way. Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: Based on the analysis by MITRE and review of community feedback, the reported conditions represent expected and intentional behavior within dnsmasq's documented design, rather than security vulnerabilities. Removed CVSS V4.0 VulDB: AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Removed CVSS V3.1 VulDB: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Removed CVSS V3.1 CISA-ADP: AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Removed CVSS V2 VulDB: (AV:L/AC:L/Au:S/C:N/I:N/A:P) Removed CWE VulDB: CWE-476 Removed CWE VulDB: CWE-404 Removed Reference VulDB: https://shimo.im/docs/ZzkLMVMN7vIYJBAQ/ Removed Reference VulDB: https://vuldb.com/?ctiid.329869 Removed Reference VulDB: https://vuldb.com/?id.329869 Removed Reference VulDB: https://vuldb.com/?submit.673154 Removed Reference CISA-ADP: https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2025q4/018337.html Removed Reference CISA-ADP: https://www.openwall.com/lists/oss-security/2025/10/27/1 Removed Reference CVE: https://news.ycombinator.com/item?id=45727137 Removed Reference CVE: https://www.openwall.com/lists/oss-security/2025/10/27/1 -
CVE Rejected by [email protected]
Nov. 03, 2025
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 03, 2025
Action Type Old Value New Value Added Tag disputed Changed Description A vulnerability was found in dnsmasq up to 2.73rc6. Affected by this vulnerability is the function check_servers of the file src/network.c of the component Config File Handler. The manipulation results in null pointer dereference. The attack needs to be approached locally. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way. A vulnerability was found in dnsmasq up to 2.73rc6. Affected by this vulnerability is the function check_servers of the file src/network.c of the component Config File Handler. The manipulation results in null pointer dereference. The attack needs to be approached locally. The exploit has been made public and could be used. It is still unclear if this vulnerability genuinely exists. This attack requires manipulating config files which might not be a realistic scenario in many cases. The vendor was contacted early about this disclosure but did not respond in any way. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 02, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Added Reference https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2025q4/018337.html Added Reference https://www.openwall.com/lists/oss-security/2025/10/27/1 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Oct. 28, 2025
Action Type Old Value New Value Added Reference https://news.ycombinator.com/item?id=45727137 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Oct. 28, 2025
Action Type Old Value New Value Added Reference https://www.openwall.com/lists/oss-security/2025/10/27/1 -
New CVE Received by [email protected]
Oct. 27, 2025
Action Type Old Value New Value Added Description A vulnerability was found in dnsmasq up to 2.73rc6. Affected by this vulnerability is the function check_servers of the file src/network.c of the component Config File Handler. The manipulation results in null pointer dereference. The attack needs to be approached locally. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Added CVSS V2 (AV:L/AC:L/Au:S/C:N/I:N/A:P) Added CWE CWE-476 Added CWE CWE-404 Added Reference https://shimo.im/docs/ZzkLMVMN7vIYJBAQ/ Added Reference https://vuldb.com/?ctiid.329869 Added Reference https://vuldb.com/?id.329869 Added Reference https://vuldb.com/?submit.673154