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CVE-2025-6952· NVD / CVE Program· CNA VulDB

Open5GS AMF Service amf-sm.c amf_state_operational assertion

A vulnerability, which was classified as problematic, has been found in Open5GS up to 2.7.5. This issue affects the function amf_state_operational of the file src/amf/amf-sm.c of the component AMF Service. The manipulation leads to reachable assertion. It is possible to launch the attack on the local host. The identifier of the patch is 53e9e059ed96b940f7ddcd9a2b68cb512524d5db. It is recommended to apply a patch to fix this issue.

MediumCVSS 4.8 · v4.0—No exploit No fix recorded
Published
Jul 1, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 13th percentile
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Action score

19

Monitor

Low priority for now.

CVSS
19 / 40 · 4.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulDB
4.8
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

VendorProduct
open5gsopen5gs

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • open5gs open5gsbefore 2.7.6

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a Open5GS

    • 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.7.4, 2.7.5affected

Same product

open5gs: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-28122A request-validation issue was discovered in Open5GS 2.1.3 through 2.2.x before 2.2.1.
    40Plan
  • CVE-2024-40130open5gs v2.6.4 is vulnerable to Buffer Overflow.
    39Monitor
  • CVE-2024-40129Open5GS v2.6.4 is vulnerable to Buffer Overflow.
    39Monitor
  • CVE-2021-25863Open5GS 2.1.3 listens on 0.0.0.0:3000 and has a default password of 1423 for the admin account.
    35Monitor
  • CVE-2026-15720Pre-auth heap out-of-bounds read in the AMF NAS 5GS mobile-identity handler
    34Monitor
  • CVE-2025-41068Reachable Assertion vulnerability in Open5GS
    34Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-41067118 days apartReachable Assertion vulnerability in Open5GS
    34Monitor
  • CVE-2025-41068118 days apartReachable Assertion vulnerability in Open5GS
    34Monitor
  • CVE-2023-37015160 days apartOpen5GS MME versions <= 2.6.4 contains an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface.
    34Monitor
  • CVE-2023-37017160 days apartOpen5GS MME versions <= 2.6.4 contain an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface.
    34Monitor
  • CVE-2023-37023160 days apartOpen5GS MME versions <= 2.6.4 contain a reachable assertion in the `Uplink NAS Transport` packet handler.
    34Monitor
  • CVE-2024-34235160 days apartOpen5GS MME versions <= 2.6.4 contains an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface.
    34Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-617 · Reachable Assertion

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/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:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records