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CVE-2026-9586: Sangoma Switchvox SQL Injection Vulnerability

97
Patch now
CRITICAL 9.8EXPLOITEDREMOTEUPGRADE

CVE-2026-9586 is a critical-severity flaw (CVSS 9.8) affecting switchvox, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An unauthenticated SQL injection vulnerability exists in Sangoma Switchvox SMB Edition 8.3 (104997). The /pa endpoint processes XML content beginning with <PolycomIPPhone> and directly concatenates the user-controlled PhoneIP value into PostgreSQL queries without sanitization or parameterization. An unauthenticated remote attacker can execute arbitrary SQL statements against the backend PostgreSQL database using a single crafted request, includin

Why this priority

  • Critical severity
  • EPSS top 3%: very likely to be exploited
  • Exploited in the wild (CISA KEV)
  • Public exploit reference
  • CISA SSVC: automatable with total technical impact
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance19.0% (top 3%)
CISA exploited listYes, fix due 2026-09-05
WeaknessCWE-89
Published2026-07-17
Last modified2026-09-03
Publisher (CNA): Security Risk Advisors · Vendor: sangoma

Am I affected?

Timeline

sangoma switchvox UPGRADE
Affected: >= 8.2.2.1 and < 8.4.0.2
Fixed in: 8.4.0.2
Safe to downgrade to: a release before 8.2.2.1
1. Check installed version
apt-cache policy switchvox || rpm -q switchvox || switchvox --version
2. UPGRADE to 8.4.0.2 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade switchvox
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade switchvox
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 8.2.2.1 (Debian / Ubuntu)
apt-cache madison switchvox sudo apt install switchvox=<VERSION_BEFORE_8.2.2.1> sudo apt-mark hold switchvox
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list switchvox sudo dnf downgrade switchvox-<VERSION_BEFORE_8.2.2.1> sudo dnf versionlock add switchvox
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.

Exact fixes by distribution

Fedora 46 · uv · FIXED · 0.13.5-1.fc46 · FEDORA-2026-61ea5a28c6 · source
sudo dnf upgrade --advisory=FEDORA-2026-61ea5a28c6

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Verify at the official source NVD · CVE Program · CISA KEV catalog · 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-2026-9586?

switchvox: upgrade to 8.4.0.2. Exact commands for each OS are on this page.

Is CVE-2026-9586 being exploited?

Yes. CVE-2026-9586 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2026-9586 affect?

CVE-2026-9586 affects switchvox. Severity is critical (CVSS 9.8). An unauthenticated SQL injection vulnerability exists in Sangoma Switchvox SMB Edition 8.3 (104997). The /pa endpoint processes XML content beginning with <PolycomIPPhone> and directly concatenates the user-controlled PhoneIP value into Pos

How urgent is CVE-2026-9586?

Priority 97/100. Critical severity; EPSS top 3%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

References

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