CVE-2016-5049: Directory traversal vulnerability in chat/openattach.aspx in ReadyDesk 9.1 allows remote attackers to read arb

This month

HIGH 7.5REMOTEDOWNGRADE

CVE-2016-5049 is a high-severity flaw (CVSS 7.5) affecting readydesk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in chat/openattach.aspx in ReadyDesk 9.1 allows remote attackers to read arbitrary files via a .. (dot dot) in the SESID parameter in conjunction with a filename in the FNAME parameter.

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-22
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-2016-5049?

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

Is CVE-2016-5049 being exploited?

CVE-2016-5049 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-2016-5049 affect?

CVE-2016-5049 affects readydesk. Severity is high (CVSS 7.5). Directory traversal vulnerability in chat/openattach.aspx in ReadyDesk 9.1 allows remote attackers to read arbitrary files via a .. (dot dot) in the SESID parameter in conjunction with a filename in the FNAME parameter.

How urgent is CVE-2016-5049?

Priority 52/100. High 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-2016-5050 CRITICAL 9.8 DOWNGRADE Unrestricted file upload vulnerability in chat/sendfile.aspx in ReadyDesk 9.1 allows remote attackers to execu
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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