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01 Record

CVE-2026-10636

Use-after-free in Zephyr IPv4 IGMP send path (`igmp_send`)

LowPUBLISHEDCNA: zephyr
CNA base score3.7 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

02 Description

Use-after-free in Zephyr IPv4 IGMP send path (`igmp_send`)

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.30% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 23.4% of scored records. A rank, not a probability.
NVD base score
3.7 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD analysis status
Modified. NVD last modified this record on 2026-10-25.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-06-16 13:12Z4 MO AGO
Last updated
2026-10-15 22:10Z13 DAYS AGO
Reserved
2026-06-02
Assigning CNA
zephyr
Record state
PUBLISHED
Severity
Low (CVSS 3.7)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
Data version
5.2
Document digest
fc09838adb0b8c5b02c1c6ff78e8bcdd2aed84cc8eaec98f31382c79c726dde7

05 Affected products

VendorProductVersionsPlatforms
zephyrprojectzephyr2.6.0 to < 4.3.1, 4.4.0 to < 4.4.1—

06 References