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VulnerabilityPublished Updated

CVE-2025-15684: Open5GS · Reachable Assertion

Affects Open5GSSource CVE Database V5

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Public exploit available · CVSS 6.9 Medium.

Data as of 9 Nov 2026, 23:23 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.7% chance of exploitation in 30 days – higher than 54% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS: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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Open5GSAffected
  • 2.7.0 – 2.7.6
7 affected builds
Fixed in–
GitHubopen5gs/open5gspkg:github/open5gs/open5gsOther threatsAffected
  • 2.7.0 – 2.7.6
7 affected builds
Fixed in–

CPE configurations (1)

  • cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade Open5GS to version 2.7.7 or later, which includes the official patch (commit c1a803516a3c0485696cb9bcca7a80ad857c7383) that fixes this vulnerability. No other mitigation or temporary workaround is indicated.

Description

A vulnerability was detected in Open5GS up to 2.7.6. Affected is the function diam_log_func of the file lib/diameter/common/init.c of the component CER Handler. The manipulation results in reachable assertion. The attack can be executed remotely. The exploit is now public and may be used. Upgrading to version 2.7.7 is able to address this issue. The patch is identified as c1a803516a3c0485696cb9bcca7a80ad857c7383. It is advisable to upgrade the affected component.

References

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