CVE-2013-2783: The DNP3 driver in IOServer drivers 1.0.19.0 allows remote attackers to cause a denial of service (infinite lo

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HIGH 7.1DOWNGRADE

CVE-2013-2783 is a high-severity flaw (CVSS 7.1) affecting ioserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The DNP3 driver in IOServer drivers 1.0.19.0 allows remote attackers to cause a denial of service (infinite loop) or obtain unspecified control via crafted data to TCP port 20000.

Why this priority

High severity

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

Risk facts

CVSS score	7.1 (High)
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-20
Published	2013-06-14
Last modified	2026-06-16

Publisher (CNA): ICS-CERT · Vendor: ioserver

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2013-06-14 19:55 UTCPublished CVE record published
2026-06-16 23:53 UTCUpdated Record last modified

ioserver ioserver DOWNGRADE

Affected: 1.0.19.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.19.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0.19.0 (Debian / Ubuntu)

apt-cache madison ioserver sudo apt install ioserver=<VERSION_BEFORE_1.0.19.0> sudo apt-mark hold ioserver

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

dnf --showduplicates list ioserver sudo dnf downgrade ioserver-<VERSION_BEFORE_1.0.19.0> sudo dnf versionlock add ioserver

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-2013-2783?

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

Is CVE-2013-2783 being exploited?

CVE-2013-2783 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-2013-2783 affect?

CVE-2013-2783 affects ioserver. Severity is high (CVSS 7.1). The DNP3 driver in IOServer drivers 1.0.19.0 allows remote attackers to cause a denial of service (infinite loop) or obtain unspecified control via crafted data to TCP port 20000.

How urgent is CVE-2013-2783?

Priority 42/100. High severity

Related CVEs

CVE-2014-5425 MEDIUM 5.0 UPGRADE IOServer before Beta2112.exe allows remote attackers to cause a denial of service (out-of-bounds read and mast
CVE-2013-2790 HIGH 7.8 MITIGATE The master-station DNP3 driver before driver19.exe, and Beta2041.exe, in IOServer allows remote attackers to c
CVE-2012-4680 MEDIUM 4.3 MITIGATE Directory traversal vulnerability in the XML Server in IOServer before 1.0.19.0, when the Root Directory pathn

References

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