CVE-2026-1975: Free5GC pfcp_reports.go identityTriggerType null pointer dereference
Vulnerability summary
CVE-2026-1975 is a high (CVSS 7.5) Improper Resource Shutdown or Release vulnerability in free5gc. EPSS estimates a 0.61% chance of exploitation in the next 30 days, higher than 48.6% of scored vulnerabilities. 2 public exploits are recorded.
Timeline
- 06-02-2026PublishedVulnerability first disclosed.
- 23-02-2026Last modifiedVulnerability information updated.
Description
A security flaw has been discovered in Free5GC up to 4.1.0. This impacts the function identityTriggerType of the file pfcp_reports.go. The manipulation results in null pointer dereference. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. Applying a patch is advised to resolve this issue.
CVSS metrics
7 scores · 2 sources · 4 versions- NVDNIST5.5MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XDiffers
- CVE.orgCNA5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:CDiffers
- NVDNIST5.0MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS trend
Probability
0.61%
Chance of exploitation in the next 30 days
Percentile
49%
Versus all other CVEs
30-day change
Increase +0.06 pp
From 0.55% on 22-09-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
2 foundFree5Gc
Maturity: poc
Exploit Reference (vuldb.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Free5gc1 product
- free5gc≤ 4.1.0
1 vendor · 1 product
References
7 links- github.com/free5gc/free5gc/Product