CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-56114

dhcpcd through 10.3.2, fixed in commit 2f00c7b, contains a one-byte stack out-of-bounds write vulnerability in dhcp6_makemessage() in src/dhcp6.c that allows unauthenticated same-link attackers to write beyond a fixed local buffer by serializing an oversized RFC6603 OPTION_PD_EXCLUDE option body. Attackers can send a crafted DHCPv6 ADVERTISE message containing an IA_PD IAPREFIX /0 with a valid OPTION_PD_EXCLUDE using an exclude prefix length of /121 through /128 to trigger the out-of-bounds write and potentially corrupt adjacent stack memory.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.002

EPSS Ranking 7.2%

CVSS Severity

CVSS v3 Score 5.3

References

Products affected by CVE-2026-56114

Dhcpcd Project » Dhcpcd » Version: 4.0.0

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.0
Dhcpcd Project » Dhcpcd » Version: 4.0.1

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.1
Dhcpcd Project » Dhcpcd » Version: 4.0.10

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.10
Dhcpcd Project » Dhcpcd » Version: 4.0.11

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.11
Dhcpcd Project » Dhcpcd » Version: 4.0.12

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.12
Dhcpcd Project » Dhcpcd » Version: 4.0.13

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.13
Dhcpcd Project » Dhcpcd » Version: 4.0.14

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.14
Dhcpcd Project » Dhcpcd » Version: 4.0.15

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.15
Dhcpcd Project » Dhcpcd » Version: 4.0.2

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.2
Dhcpcd Project » Dhcpcd » Version: 4.0.3

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.3
Dhcpcd Project » Dhcpcd » Version: 4.0.4

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.4
Dhcpcd Project » Dhcpcd » Version: 4.0.5

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.5
Dhcpcd Project » Dhcpcd » Version: 4.0.6

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.6
Dhcpcd Project » Dhcpcd » Version: 4.0.7

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.7
Dhcpcd Project » Dhcpcd » Version: 4.0.8

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.8
Dhcpcd Project » Dhcpcd » Version: 4.0.9

cpe:2.3:a:dhcpcd_project:dhcpcd:4.0.9
Dhcpcd Project » Dhcpcd » Version: 5.0.0

cpe:2.3:a:dhcpcd_project:dhcpcd:5.0.0
Dhcpcd Project » Dhcpcd » Version: 5.0.1

cpe:2.3:a:dhcpcd_project:dhcpcd:5.0.1
Dhcpcd Project » Dhcpcd » Version: 5.0.2

cpe:2.3:a:dhcpcd_project:dhcpcd:5.0.2
Dhcpcd Project » Dhcpcd » Version: 5.0.3

cpe:2.3:a:dhcpcd_project:dhcpcd:5.0.3
Dhcpcd Project » Dhcpcd » Version: 5.0.4

cpe:2.3:a:dhcpcd_project:dhcpcd:5.0.4
Dhcpcd Project » Dhcpcd » Version: 5.0.5

cpe:2.3:a:dhcpcd_project:dhcpcd:5.0.5
Dhcpcd Project » Dhcpcd » Version: 5.0.6

cpe:2.3:a:dhcpcd_project:dhcpcd:5.0.6
Dhcpcd Project » Dhcpcd » Version: 5.0.7

cpe:2.3:a:dhcpcd_project:dhcpcd:5.0.7
Dhcpcd Project » Dhcpcd » Version: 5.0.8

cpe:2.3:a:dhcpcd_project:dhcpcd:5.0.8
Dhcpcd Project » Dhcpcd » Version: 5.0.9

cpe:2.3:a:dhcpcd_project:dhcpcd:5.0.9
Dhcpcd Project » Dhcpcd » Version: 5.1.0

cpe:2.3:a:dhcpcd_project:dhcpcd:5.1.0
Dhcpcd Project » Dhcpcd » Version: 5.1.1

cpe:2.3:a:dhcpcd_project:dhcpcd:5.1.1
Dhcpcd Project » Dhcpcd » Version: 5.1.2

cpe:2.3:a:dhcpcd_project:dhcpcd:5.1.2
Dhcpcd Project » Dhcpcd » Version: 5.1.3

cpe:2.3:a:dhcpcd_project:dhcpcd:5.1.3
Dhcpcd Project » Dhcpcd » Version: 5.1.4

cpe:2.3:a:dhcpcd_project:dhcpcd:5.1.4
Dhcpcd Project » Dhcpcd » Version: 5.1.5

cpe:2.3:a:dhcpcd_project:dhcpcd:5.1.5
Dhcpcd Project » Dhcpcd » Version: 5.2.0

cpe:2.3:a:dhcpcd_project:dhcpcd:5.2.0
Dhcpcd Project » Dhcpcd » Version: 5.2.1

cpe:2.3:a:dhcpcd_project:dhcpcd:5.2.1
Dhcpcd Project » Dhcpcd » Version: 5.2.10

cpe:2.3:a:dhcpcd_project:dhcpcd:5.2.10
Dhcpcd Project » Dhcpcd » Version: 5.2.11

cpe:2.3:a:dhcpcd_project:dhcpcd:5.2.11
Dhcpcd Project » Dhcpcd » Version: 5.2.12

cpe:2.3:a:dhcpcd_project:dhcpcd:5.2.12
Dhcpcd Project » Dhcpcd » Version: 5.2.2

cpe:2.3:a:dhcpcd_project:dhcpcd:5.2.2
Dhcpcd Project » Dhcpcd » Version: 5.2.3

cpe:2.3:a:dhcpcd_project:dhcpcd:5.2.3
Dhcpcd Project » Dhcpcd » Version: 5.2.4

cpe:2.3:a:dhcpcd_project:dhcpcd:5.2.4
Dhcpcd Project » Dhcpcd » Version: 5.2.5

cpe:2.3:a:dhcpcd_project:dhcpcd:5.2.5
Dhcpcd Project » Dhcpcd » Version: 5.2.6

cpe:2.3:a:dhcpcd_project:dhcpcd:5.2.6
Dhcpcd Project » Dhcpcd » Version: 5.2.7

cpe:2.3:a:dhcpcd_project:dhcpcd:5.2.7
Dhcpcd Project » Dhcpcd » Version: 5.2.8

cpe:2.3:a:dhcpcd_project:dhcpcd:5.2.8
Dhcpcd Project » Dhcpcd » Version: 5.2.9

cpe:2.3:a:dhcpcd_project:dhcpcd:5.2.9
Dhcpcd Project » Dhcpcd » Version: 5.5.0

cpe:2.3:a:dhcpcd_project:dhcpcd:5.5.0
Dhcpcd Project » Dhcpcd » Version: 5.5.1

cpe:2.3:a:dhcpcd_project:dhcpcd:5.5.1
Dhcpcd Project » Dhcpcd » Version: 5.5.2

cpe:2.3:a:dhcpcd_project:dhcpcd:5.5.2
Dhcpcd Project » Dhcpcd » Version: 5.5.3

cpe:2.3:a:dhcpcd_project:dhcpcd:5.5.3
Dhcpcd Project » Dhcpcd » Version: 5.5.4

cpe:2.3:a:dhcpcd_project:dhcpcd:5.5.4
Dhcpcd Project » Dhcpcd » Version: 5.5.5

cpe:2.3:a:dhcpcd_project:dhcpcd:5.5.5
Dhcpcd Project » Dhcpcd » Version: 5.5.6

cpe:2.3:a:dhcpcd_project:dhcpcd:5.5.6
Dhcpcd Project » Dhcpcd » Version: 5.6.0

cpe:2.3:a:dhcpcd_project:dhcpcd:5.6.0
Dhcpcd Project » Dhcpcd » Version: 5.6.1

cpe:2.3:a:dhcpcd_project:dhcpcd:5.6.1
Dhcpcd Project » Dhcpcd » Version: 5.6.2

cpe:2.3:a:dhcpcd_project:dhcpcd:5.6.2
Dhcpcd Project » Dhcpcd » Version: 5.6.3

cpe:2.3:a:dhcpcd_project:dhcpcd:5.6.3
Dhcpcd Project » Dhcpcd » Version: 5.6.4

cpe:2.3:a:dhcpcd_project:dhcpcd:5.6.4
Dhcpcd Project » Dhcpcd » Version: 5.6.5

cpe:2.3:a:dhcpcd_project:dhcpcd:5.6.5
Dhcpcd Project » Dhcpcd » Version: 5.6.6

cpe:2.3:a:dhcpcd_project:dhcpcd:5.6.6
Dhcpcd Project » Dhcpcd » Version: 5.6.7

cpe:2.3:a:dhcpcd_project:dhcpcd:5.6.7
Dhcpcd Project » Dhcpcd » Version: 5.6.8

cpe:2.3:a:dhcpcd_project:dhcpcd:5.6.8
Dhcpcd Project » Dhcpcd » Version: 5.99.2

cpe:2.3:a:dhcpcd_project:dhcpcd:5.99.2
Dhcpcd Project » Dhcpcd » Version: 5.99.3

cpe:2.3:a:dhcpcd_project:dhcpcd:5.99.3
Dhcpcd Project » Dhcpcd » Version: 5.99.4

cpe:2.3:a:dhcpcd_project:dhcpcd:5.99.4
Dhcpcd Project » Dhcpcd » Version: 5.99.5

cpe:2.3:a:dhcpcd_project:dhcpcd:5.99.5
Dhcpcd Project » Dhcpcd » Version: 5.99.6

cpe:2.3:a:dhcpcd_project:dhcpcd:5.99.6
Dhcpcd Project » Dhcpcd » Version: 5.99.7

cpe:2.3:a:dhcpcd_project:dhcpcd:5.99.7
Dhcpcd Project » Dhcpcd » Version: 6.0.0

cpe:2.3:a:dhcpcd_project:dhcpcd:6.0.0
Dhcpcd Project » Dhcpcd » Version: 6.0.1

cpe:2.3:a:dhcpcd_project:dhcpcd:6.0.1
Dhcpcd Project » Dhcpcd » Version: 6.0.2

cpe:2.3:a:dhcpcd_project:dhcpcd:6.0.2
Dhcpcd Project » Dhcpcd » Version: 6.0.3

cpe:2.3:a:dhcpcd_project:dhcpcd:6.0.3
Dhcpcd Project » Dhcpcd » Version: 6.0.4

cpe:2.3:a:dhcpcd_project:dhcpcd:6.0.4
Dhcpcd Project » Dhcpcd » Version: 6.0.5

cpe:2.3:a:dhcpcd_project:dhcpcd:6.0.5
Dhcpcd Project » Dhcpcd » Version: 6.1.0

cpe:2.3:a:dhcpcd_project:dhcpcd:6.1.0
Dhcpcd Project » Dhcpcd » Version: 6.10.0

cpe:2.3:a:dhcpcd_project:dhcpcd:6.10.0
Dhcpcd Project » Dhcpcd » Version: 6.10.1

cpe:2.3:a:dhcpcd_project:dhcpcd:6.10.1
Dhcpcd Project » Dhcpcd » Version: 6.10.2

cpe:2.3:a:dhcpcd_project:dhcpcd:6.10.2
Dhcpcd Project » Dhcpcd » Version: 6.10.3

cpe:2.3:a:dhcpcd_project:dhcpcd:6.10.3
Dhcpcd Project » Dhcpcd » Version: 6.11.0

cpe:2.3:a:dhcpcd_project:dhcpcd:6.11.0
Dhcpcd Project » Dhcpcd » Version: 6.11.1

cpe:2.3:a:dhcpcd_project:dhcpcd:6.11.1
Dhcpcd Project » Dhcpcd » Version: 6.11.2

cpe:2.3:a:dhcpcd_project:dhcpcd:6.11.2
Dhcpcd Project » Dhcpcd » Version: 6.11.3

cpe:2.3:a:dhcpcd_project:dhcpcd:6.11.3
Dhcpcd Project » Dhcpcd » Version: 6.11.4

cpe:2.3:a:dhcpcd_project:dhcpcd:6.11.4
Dhcpcd Project » Dhcpcd » Version: 6.11.5

cpe:2.3:a:dhcpcd_project:dhcpcd:6.11.5
Dhcpcd Project » Dhcpcd » Version: 6.11.6

cpe:2.3:a:dhcpcd_project:dhcpcd:6.11.6
Dhcpcd Project » Dhcpcd » Version: 6.2.0

cpe:2.3:a:dhcpcd_project:dhcpcd:6.2.0
Dhcpcd Project » Dhcpcd » Version: 6.2.1

cpe:2.3:a:dhcpcd_project:dhcpcd:6.2.1
Dhcpcd Project » Dhcpcd » Version: 6.3.0

cpe:2.3:a:dhcpcd_project:dhcpcd:6.3.0
Dhcpcd Project » Dhcpcd » Version: 6.3.1

cpe:2.3:a:dhcpcd_project:dhcpcd:6.3.1
Dhcpcd Project » Dhcpcd » Version: 6.3.2

cpe:2.3:a:dhcpcd_project:dhcpcd:6.3.2
Dhcpcd Project » Dhcpcd » Version: 6.4.0

cpe:2.3:a:dhcpcd_project:dhcpcd:6.4.0
Dhcpcd Project » Dhcpcd » Version: 6.4.1

cpe:2.3:a:dhcpcd_project:dhcpcd:6.4.1
Dhcpcd Project » Dhcpcd » Version: 6.4.2

cpe:2.3:a:dhcpcd_project:dhcpcd:6.4.2
Dhcpcd Project » Dhcpcd » Version: 6.4.3

cpe:2.3:a:dhcpcd_project:dhcpcd:6.4.3
Dhcpcd Project » Dhcpcd » Version: 6.4.4

cpe:2.3:a:dhcpcd_project:dhcpcd:6.4.4
Dhcpcd Project » Dhcpcd » Version: 6.4.5

cpe:2.3:a:dhcpcd_project:dhcpcd:6.4.5
Dhcpcd Project » Dhcpcd » Version: 6.4.6

cpe:2.3:a:dhcpcd_project:dhcpcd:6.4.6
Dhcpcd Project » Dhcpcd » Version: 6.4.7

cpe:2.3:a:dhcpcd_project:dhcpcd:6.4.7
Dhcpcd Project » Dhcpcd » Version: 6.5.0

cpe:2.3:a:dhcpcd_project:dhcpcd:6.5.0
Dhcpcd Project » Dhcpcd » Version: 6.5.1

cpe:2.3:a:dhcpcd_project:dhcpcd:6.5.1
Dhcpcd Project » Dhcpcd » Version: 6.6.0

cpe:2.3:a:dhcpcd_project:dhcpcd:6.6.0
Dhcpcd Project » Dhcpcd » Version: 6.6.1

cpe:2.3:a:dhcpcd_project:dhcpcd:6.6.1
Dhcpcd Project » Dhcpcd » Version: 6.6.2

cpe:2.3:a:dhcpcd_project:dhcpcd:6.6.2
Dhcpcd Project » Dhcpcd » Version: 6.6.3

cpe:2.3:a:dhcpcd_project:dhcpcd:6.6.3
Dhcpcd Project » Dhcpcd » Version: 6.6.4

cpe:2.3:a:dhcpcd_project:dhcpcd:6.6.4
Dhcpcd Project » Dhcpcd » Version: 6.6.5

cpe:2.3:a:dhcpcd_project:dhcpcd:6.6.5
Dhcpcd Project » Dhcpcd » Version: 6.6.6

cpe:2.3:a:dhcpcd_project:dhcpcd:6.6.6
Dhcpcd Project » Dhcpcd » Version: 6.6.7

cpe:2.3:a:dhcpcd_project:dhcpcd:6.6.7
Dhcpcd Project » Dhcpcd » Version: 6.7.0

cpe:2.3:a:dhcpcd_project:dhcpcd:6.7.0
Dhcpcd Project » Dhcpcd » Version: 6.7.1

cpe:2.3:a:dhcpcd_project:dhcpcd:6.7.1
Dhcpcd Project » Dhcpcd » Version: 6.8.0

cpe:2.3:a:dhcpcd_project:dhcpcd:6.8.0
Dhcpcd Project » Dhcpcd » Version: 6.8.1

cpe:2.3:a:dhcpcd_project:dhcpcd:6.8.1
Dhcpcd Project » Dhcpcd » Version: 6.8.2

cpe:2.3:a:dhcpcd_project:dhcpcd:6.8.2
Dhcpcd Project » Dhcpcd » Version: 6.9.0

cpe:2.3:a:dhcpcd_project:dhcpcd:6.9.0
Dhcpcd Project » Dhcpcd » Version: 6.9.1

cpe:2.3:a:dhcpcd_project:dhcpcd:6.9.1
Dhcpcd Project » Dhcpcd » Version: 6.9.2

cpe:2.3:a:dhcpcd_project:dhcpcd:6.9.2
Dhcpcd Project » Dhcpcd » Version: 6.9.3

cpe:2.3:a:dhcpcd_project:dhcpcd:6.9.3
Dhcpcd Project » Dhcpcd » Version: 6.9.4

cpe:2.3:a:dhcpcd_project:dhcpcd:6.9.4
Dhcpcd Project » Dhcpcd » Version: 7.0.0

cpe:2.3:a:dhcpcd_project:dhcpcd:7.0.0
Dhcpcd Project » Dhcpcd » Version: 7.0.1

cpe:2.3:a:dhcpcd_project:dhcpcd:7.0.1
Dhcpcd Project » Dhcpcd » Version: 7.0.2

cpe:2.3:a:dhcpcd_project:dhcpcd:7.0.2
Dhcpcd Project » Dhcpcd » Version: 7.0.3

cpe:2.3:a:dhcpcd_project:dhcpcd:7.0.3
Dhcpcd Project » Dhcpcd » Version: 7.0.4

cpe:2.3:a:dhcpcd_project:dhcpcd:7.0.4
Dhcpcd Project » Dhcpcd » Version: 7.0.5

cpe:2.3:a:dhcpcd_project:dhcpcd:7.0.5
Dhcpcd Project » Dhcpcd » Version: 7.0.6

cpe:2.3:a:dhcpcd_project:dhcpcd:7.0.6
Dhcpcd Project » Dhcpcd » Version: 7.0.7

cpe:2.3:a:dhcpcd_project:dhcpcd:7.0.7
Dhcpcd Project » Dhcpcd » Version: 7.0.8

cpe:2.3:a:dhcpcd_project:dhcpcd:7.0.8
Dhcpcd Project » Dhcpcd » Version: 7.1.0

cpe:2.3:a:dhcpcd_project:dhcpcd:7.1.0
Dhcpcd Project » Dhcpcd » Version: 7.1.1

cpe:2.3:a:dhcpcd_project:dhcpcd:7.1.1
Dhcpcd Project » Dhcpcd » Version: 7.2.0

cpe:2.3:a:dhcpcd_project:dhcpcd:7.2.0
Dhcpcd Project » Dhcpcd » Version: 7.2.1

cpe:2.3:a:dhcpcd_project:dhcpcd:7.2.1
Dhcpcd Project » Dhcpcd » Version: 7.2.2

cpe:2.3:a:dhcpcd_project:dhcpcd:7.2.2

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-56114

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