CVE-2025-65239: Incorrect access control in the /aux1/ocussd/trace endpoint of OpenCode Systems USSD Gateway OC Release:5, ver

Routine

MEDIUM 4.3DOWNGRADE

CVE-2025-65239 is a medium-severity flaw (CVSS 4.3) affecting ussd gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Incorrect access control in the /aux1/ocussd/trace endpoint of OpenCode Systems USSD Gateway OC Release:5, version 6.13.11 allows attackers with low-level privileges to read server logs.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-284
Published	2025-11-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: opencode

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-26 17:15 UTCPublished CVE record published
2026-06-17 09:55 UTCUpdated Record last modified

opencode ussd gateway DOWNGRADE

Affected: 6.13.11

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.13.11

1. Check installed version

apt-cache policy ussd-gateway || rpm -q ussd-gateway || ussd-gateway --version

2. No fixed release: DOWNGRADE to a release before 6.13.11 (Debian / Ubuntu)

apt-cache madison ussd-gateway sudo apt install ussd-gateway=<VERSION_BEFORE_6.13.11> sudo apt-mark hold ussd-gateway

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ussd-gateway sudo dnf downgrade ussd-gateway-<VERSION_BEFORE_6.13.11> sudo dnf versionlock add ussd-gateway

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-65239?

ussd gateway: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-65239 being exploited?

CVE-2025-65239 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-65239 affect?

CVE-2025-65239 affects ussd gateway. Severity is medium (CVSS 4.3). Incorrect access control in the /aux1/ocussd/trace endpoint of OpenCode Systems USSD Gateway OC Release:5, version 6.13.11 allows attackers with low-level privileges to read server logs.

How urgent is CVE-2025-65239?

Priority 26/100. Public exploit reference

Related CVEs

CVE-2025-70614 HIGH 8.1 DOWNGRADE OpenCode Systems OC Messaging / USSD Gateway OC Release 6.32.2 contains a broken access control vulnerability
CVE-2025-65238 MEDIUM 6.5 DOWNGRADE Incorrect access control in the getSubUsersByProvider function of OpenCode Systems USSD Gateway OC Release: 5
CVE-2025-65237 MEDIUM 6.1 DOWNGRADE A reflected cross-site scripted (XSS) vulnerability in OpenCode Systems USSD Gateway OC Release: 5 allows atta
CVE-2025-65236 CRITICAL 9.8 DOWNGRADE OpenCode Systems USSD Gateway OC Release: 5 was discovered to contain a SQL injection vulnerability via the Se
CVE-2025-65235 CRITICAL 9.8 DOWNGRADE OpenCode Systems USSD Gateway OC Release: 5 Version 6.13.11 was discovered to contain a SQL injection vulnerab

References

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