CVE-2026-30045Public exploitNetwork attack vector

NRF crash via overflowing requester-features parsing

Published Aug 27, 2026 · Updated Aug 27, 2026

Integer overflow in Open5GS 2.7.6 allows remote attackers to crash the NRF with a crafted HTTP/2 GET request. The SBI request parser passes requester-features to ogs_uint64_from_string(), whose strtoll() error path invokes a fatal assertion when an oversized hexadecimal value causes ERANGE. Network access to the NRF discovery endpoint is required; one malformed request terminates the NRF process and interrupts network-function discovery.

CVSS severityUnavailable
Unscored
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Integer overflow in Open5GS 2.7.6 allows remote attackers to crash the NRF with a crafted HTTP/2 GET request. The SBI request parser passes requester-features to ogs_uint64_from_string(), whose strtoll() error path invokes a fatal assertion when an oversized hexadecimal value causes ERANGE. Network access to the NRF discovery endpoint is required; one malformed request terminates the NRF process and interrupts network-function discovery.

The record

CVE
CVE-2026-30045
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo