CVE-2026-108103: medium-severity vulnerability in open5gs
Open5GS through 2.8.0 Heap Out-of-Bounds Read via PFCP Dropped DL Traffic Threshold IE
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.4%
Open5GS through 2.8.0 contains a heap out-of-bounds read vulnerability in ogs_pfcp_parse_dropped_dl_traffic_threshold() that allows remote unauthenticated attackers to read past IE buffers via short IEs. Attackers can send PFCP Session Establishment or Modification Requests to the UPF on UDP port 8805 with DLPA and DLBY flags set, potentially crashing the UPF.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
open5gs · open5gsRelated CVEs — open5gs
In the same product, most dangerous first.
CVE-2026-15720HIGHPre-auth heap out-of-bounds read in the AMF NAS 5GS mobile-identity handlerEPSS 0.5%CVE-2026-108105HIGHOpen5GS through 2.8.0 MME Reachable Assertion via GTPv1 SGSN Context RequestEPSS 0.5%CVE-2026-116543HIGHOpen5GS 1.3.0 through 2.8.0 Heap Out-of-Bounds Write via SBI Multipart ParserEPSS 0.4%CVE-2026-108102MEDIUMOpen5GS through 2.8.0 Heap Out-of-Bounds Read via PFCP Volume Measurement IEEPSS 0.4%CVE-2026-116544MEDIUMOpen5GS 2.6.1 through 2.8.0 Out-of-Bounds Read via parse_scheme_outputEPSS 0.4%
References
https://github.com/open5gs/open5gshttps://github.com/open5gs/open5gs/blob/v2.8.0/lib/pfcp/types.c#L484-L516https://github.com/open5gs/open5gs/commit/88e64fc1f87e0d321364b3bb710ef6a8f274e568https://www.vulncheck.com/advisories/open5gs-through-2.8.0-heap-out-of-bounds-read-via-pfcp-dropped-dl-traffic-threshold-ie