Search criteria
9 vulnerabilities by dnsmasq
CVE-2026-5172 (GCVE-0-2026-5172)
Vulnerability from cvelistv5 – Published: 2026-05-11 16:48 – Updated: 2026-05-13 12:48
VLAI?
Title
CVE-2026-5172
Summary
A buffer overflow in dnsmasq’s extract_addresses() function allows an attacker to trigger a heap out-of-bounds read and crash by exploiting a malformed DNS response, enabling extract_name() to advance the pointer past the record’s end.
Severity ?
7.3 (High)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
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CVE-2026-4893 (GCVE-0-2026-4893)
Vulnerability from cvelistv5 – Published: 2026-05-11 16:48 – Updated: 2026-05-11 19:57
VLAI?
Title
CVE-2026-4893
Summary
An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client subnet information.
Severity ?
5.3 (Medium)
CWE
- CWE-287 - Improper Authentication
Assigner
References
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CVE-2026-4892 (GCVE-0-2026-4892)
Vulnerability from cvelistv5 – Published: 2026-05-11 16:47 – Updated: 2026-05-11 19:58
VLAI?
Title
CVE-2026-4892
Summary
A heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root privileges via a crafted DHCPv6 packet.
Severity ?
8.4 (High)
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
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CVE-2026-4891 (GCVE-0-2026-4891)
Vulnerability from cvelistv5 – Published: 2026-05-11 16:47 – Updated: 2026-05-11 19:58
VLAI?
Title
CVE-2026-4891
Summary
A heap-based out-of-bounds read vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.
Severity ?
5.3 (Medium)
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
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CVE-2026-4890 (GCVE-0-2026-4890)
Vulnerability from cvelistv5 – Published: 2026-05-11 16:47 – Updated: 2026-05-11 19:58
VLAI?
Title
CVE-2026-4890
Summary
A Denial of Service (DoS) vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.
Severity ?
7.5 (High)
CWE
- CWE-835 - Loop with Unreachable Termination
Assigner
References
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CVE-2026-2291 (GCVE-0-2026-2291)
Vulnerability from cvelistv5 – Published: 2026-05-11 16:47 – Updated: 2026-05-13 12:45
VLAI?
Title
CVE-2026-2291
Summary
dnsmasqs extract_name() function can be abused to cause a heap buffer overflow, allowing an attacker to inject false DNS cache entries, which could result in DNS lookups to redirect to an attacker-controlled IP address, or to cause a DoS.
Severity ?
7.3 (High)
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
7 references
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CVE-2020-37127 (GCVE-0-2020-37127)
Vulnerability from cvelistv5 – Published: 2026-02-05 16:13 – Updated: 2026-02-05 21:18
VLAI?
Title
dnsmasq-utils 2.79-1 - 'dhcp_release' Denial of Service
Summary
Dnsmasq-utils 2.79-1 contains a buffer overflow vulnerability in the dhcp_release utility that allows attackers to cause a denial of service by supplying excessive input. Attackers can trigger a core dump and terminate the dhcp_release process by sending a crafted input string longer than 16 characters.
Severity ?
5.5 (Medium)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/48301 | exploit |
| https://launchpad.net/ubuntu/+source/dnsmasq/2.79-1 | product |
| https://www.vulncheck.com/advisories/dnsmasq-util… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| dnsmasq | dnsmasq-utils |
Affected:
2.79
|
Date Public ?
2020-04-06 00:00
Credits
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CVE-2006-2017 (GCVE-0-2006-2017)
Vulnerability from cvelistv5 – Published: 2006-04-25 10:00 – Updated: 2024-08-07 17:35
VLAI?
Summary
Dnsmasq 2.29 allows remote attackers to cause a denial of service (application crash) via a DHCP client broadcast reply request.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
6 references
| URL | Tags |
|---|---|
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| https://exchange.xforce.ibmcloud.com/vulnerabilit… | vdb-entryx_refsource_XF |
| http://www.securityfocus.com/bid/17662 | vdb-entryx_refsource_BID |
| http://thekelleys.org.uk/dnsmasq/CHANGELOG | x_refsource_CONFIRM |
Date Public ?
2006-04-24 00:00
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CVE-2005-0876 (GCVE-0-2005-0876)
Vulnerability from cvelistv5 – Published: 2005-03-26 05:00 – Updated: 2024-08-07 21:28
VLAI?
Summary
Off-by-one buffer overflow in Dnsmasq before 2.21 may allow attackers to execute arbitrary code via the DHCP lease file.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://exchange.xforce.ibmcloud.com/vulnerabilit… | vdb-entryx_refsource_XF |
| http://secunia.com/advisories/14691 | third-party-advisoryx_refsource_SECUNIA |
| http://www.thekelleys.org.uk/dnsmasq/CHANGELOG | x_refsource_CONFIRM |
| http://www.securityfocus.com/bid/12897 | vdb-entryx_refsource_BID |
Date Public ?
2005-03-25 00:00
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