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01 Record

CVE-2026-121625

GNU Gatekeeper before 5.16 Out-of-Bounds Read via RTCP SDES Parsing

MediumPUBLISHEDCNA: VulnCheck
CNA base score6.3 CVSS v4.0CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
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02 Description

GNU Gatekeeper before 5.16 Out-of-Bounds Read via RTCP SDES Parsing

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
Not scored by EPSS
EPSS percentile
Not scored by EPSS
NVD base score
The NVD has published no score for this record
NVD CVSS vector
No NVD score to derive
NVD analysis status
Not recorded
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
2026-11-03 17:13Z1 HR AGO
Last updated
2026-11-03 17:24Z1 HR AGO
Reserved
2026-11-03
Assigning CNA
VulnCheck
Record state
PUBLISHED
Severity
Medium (CVSS 6.3)
CNA CVSS vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Weaknesses
Data version
5.2
Document digest
e36883082d9a537b323ac4be5bafc67e44fc70f9a62087532a72039041e0483b

05 Affected products

VendorProductVersionsPlatforms
willamowiusgnugk0 to < 5.16—

06 References