Heap-based Buffer Overflow Affecting github.com/free5gc/go-upf/internal/forwarder package, versions <1.2.8
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-GOLANG-GITHUBCOMFREE5GCGOUPFINTERNALFORWARDER-15285597
- published16 Feb 2026
- disclosed13 Feb 2026
- creditzfei10990-cmd
Introduced: 13 Feb 2026
CVE-2025-70122 (opens in a new tab)How to fix?
Upgrade github.com/free5gc/go-upf/internal/forwarder to version 1.2.8 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow via the SDFFilterFields.UnmarshalBinary function when processing a declared length that exceeds the actual buffer capacity. An attacker can cause a crash of the UPF component by sending a specially crafted PFCP Session Modification Request.