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CVE-2015-1379: The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to cause a deni

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HIGH 7.5REMOTEUPGRADE

CVE-2015-1379 is a high-severity flaw (CVSS 7.5) affecting socat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to cause a denial of service (process freeze or crash).

Why this priority

  • High severity
  • EPSS top 10%: very likely to be exploited
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score7.5 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance3.9% (top 10%)
CISA exploited listNo
WeaknessCWE-20
Published2017-06-08
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: dest-unreach

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

Am I affected?

Timeline

dest-unreach socat UPGRADE
Affected: <= 1.7.2.4 · 2.0.0-b8
Fixed in: newer than 1.7.2.4
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy socat || rpm -q socat || socat --version
2. UPGRADE to newer than 1.7.2.4 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade socat
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade socat
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
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-2015-1379?

socat: upgrade to newer than 1.7.2.4. Exact commands for each OS are on this page.

Is CVE-2015-1379 being exploited?

CVE-2015-1379 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-2015-1379 affect?

CVE-2015-1379 affects socat. Severity is high (CVSS 7.5). The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to cause a denial of service (process freeze or crash).

How urgent is CVE-2015-1379?

Priority 54/100. High severity; EPSS top 10%: very likely to be exploited; Remotely exploitable, no login, no user action

Related CVEs

References

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