CVE-2016-5050: Unrestricted file upload vulnerability in chat/sendfile.aspx in ReadyDesk 9.1 allows remote attackers to execu

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2016-5050 is a critical-severity flaw (CVSS 9.8) affecting readydesk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unrestricted file upload vulnerability in chat/sendfile.aspx in ReadyDesk 9.1 allows remote attackers to execute arbitrary code by uploading and requesting a .aspx file.

Why this priority

Critical severity
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	2.8% (top 13%)
CISA exploited list	No
Weakness	CWE-434
Published	2016-08-26
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: readydesk

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

Am I affected?

Timeline

2016-08-26 19:59 UTCPublished CVE record published
2026-06-17 00:48 UTCUpdated Record last modified

readydesk readydesk DOWNGRADE

Affected: 9.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.1

1. Check installed version

apt-cache policy readydesk || rpm -q readydesk || readydesk --version

2. No fixed release: DOWNGRADE to a release before 9.1 (Debian / Ubuntu)

apt-cache madison readydesk sudo apt install readydesk=<VERSION_BEFORE_9.1> sudo apt-mark hold readydesk

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

dnf --showduplicates list readydesk sudo dnf downgrade readydesk-<VERSION_BEFORE_9.1> sudo dnf versionlock add readydesk

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-2016-5050?

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

Is CVE-2016-5050 being exploited?

CVE-2016-5050 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-2016-5050 affect?

CVE-2016-5050 affects readydesk. Severity is critical (CVSS 9.8). Unrestricted file upload vulnerability in chat/sendfile.aspx in ReadyDesk 9.1 allows remote attackers to execute arbitrary code by uploading and requesting a .aspx file.

How urgent is CVE-2016-5050?

Priority 61/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2016-5683 HIGH 7.8 DOWNGRADE ReadyDesk 9.1 allows local users to determine cleartext SQL Server credentials by reading the SQL_Config.aspx
CVE-2016-5049 HIGH 7.5 DOWNGRADE Directory traversal vulnerability in chat/openattach.aspx in ReadyDesk 9.1 allows remote attackers to read arb
CVE-2016-5048 CRITICAL 9.8 DOWNGRADE SQL injection vulnerability in chat/staff/default.aspx in ReadyDesk 9.1 allows remote attackers to execute arb

References

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