7.5

CVE-2026-1683: Free5GC SMF PFCP handler.go HandlePfcpSessionReportRequest denial of service

Modified
Published 30-01-2026Last modified 23-02-2026

Vulnerability summary

CVE-2026-1683 is a high (CVSS 7.5) Improper Resource Shutdown or Release vulnerability in free5gc. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 53.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.72%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Timeline

  1. 30-01-2026
    PublishedVulnerability first disclosed.
  2. 23-02-2026
    Last modifiedVulnerability information updated.

Description

A vulnerability has been found in Free5GC SMF up to 4.1.0. Affected by this vulnerability is the function HandlePfcpSessionReportRequest of the file internal/pfcp/handler/handler.go of the component PFCP. The manipulation leads to denial of service. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. To fix this issue, it is recommended to deploy a patch.

CVSS metrics

7 scores · 2 sources · 4 versions

EPSS trend

Probability

0.72%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

Increase +0.04 pp

From 0.68% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Free5Gc

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Free5gc2 products

1 vendor · 2 products

References

8 links