CVE-2023-36619: Atos Unify OpenScape Session Border Controller through V10 R3.01.03 allows execution of administrative scripts

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2023-36619 is a critical-severity flaw (CVSS 9.8) affecting session border controller. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Atos Unify OpenScape Session Border Controller through V10 R3.01.03 allows execution of administrative scripts by unauthenticated users.

Why this priority

Critical severity
EPSS top 10%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.9% (top 10%)
CISA exploited list	No
Weakness	CWE-20
Published	2023-10-04
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: unify

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

Am I affected?

Timeline

2023-10-04 21:15 UTCPublished CVE record published
2026-06-17 06:06 UTCUpdated Record last modified

unify session border controller DOWNGRADE

Affected: 10_r3.01.03

Fixed in: no fixed release known

Safe to downgrade to: a release before 10_r3.01.03

1. Check installed version

apt-cache policy session-border-controller || rpm -q session-border-controller || session-border-controller --version

2. No fixed release: DOWNGRADE to a release before 10_r3.01.03 (Debian / Ubuntu)

apt-cache madison session-border-controller sudo apt install session-border-controller=<VERSION_BEFORE_10_r3.01.03> sudo apt-mark hold session-border-controller

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

dnf --showduplicates list session-border-controller sudo dnf downgrade session-border-controller-<VERSION_BEFORE_10_r3.01.03> sudo dnf versionlock add session-border-controller

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-2023-36619?

session border controller: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-36619 being exploited?

CVE-2023-36619 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-2023-36619 affect?

CVE-2023-36619 affects session border controller. Severity is critical (CVSS 9.8). Atos Unify OpenScape Session Border Controller through V10 R3.01.03 allows execution of administrative scripts by unauthenticated users.

How urgent is CVE-2023-36619?

Priority 67/100. Critical severity; EPSS top 10%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-36618 HIGH 8.8 DOWNGRADE Atos Unify OpenScape Session Border Controller through V10 R3.01.03 allows execution of OS commands as root us

References

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