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Socat

6 CVEs product

Monthly

CVE-2026-56123 Jun 25, 17:00 CRITICAL PATCH Act Now

Heap-based buffer overflow in socat's SOCKS5 reply parser allows a malicious or compromised SOCKS5 proxy server to corrupt heap memory in clients that route connections through it, with potential for code execution. The flaw affects socat versions prior to 1.8.1.2 (packaged on Alpine Linux as 1.8.1.2-r0) and is triggered when socat acts as a SOCKS5 client and processes an attacker-crafted server reply. No public exploit identified at time of analysis; the CVSS 4.0 base score is 9.2, but the High attack complexity (AC:H) reflects that exploitation depends on a specific SOCKS5 usage path.

Buffer Overflow Heap Overflow Socat Dest Unreach
NVD VulDB
CVSS 4.0
9.2
EPSS
0.3%
CVE-2015-1379 Jun 08, 21:29 HIGH PATCH This Week

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). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Denial Of Service Socat Dest Unreach
NVD
CVSS 3.0
7.5
EPSS
2.3%
CVE-2016-2217 Jan 30, 22:59 MEDIUM PATCH This Month

The OpenSSL address implementation in Socat 1.7.3.0 and 2.0.0-b8 does not use a prime number for the DH, which makes it easier for remote attackers to obtain the shared secret. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Information Disclosure OpenSSL Socat Dest Unreach
NVD
CVSS 3.0
5.3
EPSS
0.4%
CVE-2013-3571 May 08, 14:29 LOW Monitor

socat 1.2.0.0 before 1.7.2.2 and 2.0.0-b1 before 2.0.0-b6, when used for a listen type address and the fork option is enabled, allows remote attackers to cause a denial of service (file descriptor. Rated low severity (CVSS 2.6), this vulnerability is remotely exploitable. No vendor patch available.

Denial Of Service Socat Dest Unreach
NVD
CVSS 2.0
2.6
EPSS
0.5%
CVE-2014-0019 Feb 04, 21:55 LOW PATCH Monitor

Stack-based buffer overflow in socat 1.3.0.0 through 1.7.2.2 and 2.0.0-b1 through 2.0.0-b6 allows local users to cause a denial of service (segmentation fault) via a long server name in the. Rated low severity (CVSS 1.9).

Buffer Overflow Denial Of Service Fedora Socat Opensuse +2
NVD
CVSS 2.0
1.9
EPSS
0.1%
CVE-2012-0219 Jun 21, 15:55 MEDIUM PATCH This Month

Heap-based buffer overflow in the xioscan_readline function in xio-readline.c in socat 1.4.0.0 through 1.7.2.0 and 2.0.0-b1 through 2.0.0-b4 allows local users to execute arbitrary code via the. Rated medium severity (CVSS 6.2).

RCE Buffer Overflow Socat Dest Unreach
NVD
CVSS 2.0
6.2
EPSS
0.1%
EPSS 0% CVSS 9.2
CRITICAL PATCH Act Now

Heap-based buffer overflow in socat's SOCKS5 reply parser allows a malicious or compromised SOCKS5 proxy server to corrupt heap memory in clients that route connections through it, with potential for code execution. The flaw affects socat versions prior to 1.8.1.2 (packaged on Alpine Linux as 1.8.1.2-r0) and is triggered when socat acts as a SOCKS5 client and processes an attacker-crafted server reply. No public exploit identified at time of analysis; the CVSS 4.0 base score is 9.2, but the High attack complexity (AC:H) reflects that exploitation depends on a specific SOCKS5 usage path.

Buffer Overflow Heap Overflow Socat +1
NVD VulDB
EPSS 2% CVSS 7.5
HIGH PATCH This Week

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). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Denial Of Service Socat Dest Unreach
NVD
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

The OpenSSL address implementation in Socat 1.7.3.0 and 2.0.0-b8 does not use a prime number for the DH, which makes it easier for remote attackers to obtain the shared secret. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Information Disclosure OpenSSL Socat +1
NVD
EPSS 1% CVSS 2.6
LOW Monitor

socat 1.2.0.0 before 1.7.2.2 and 2.0.0-b1 before 2.0.0-b6, when used for a listen type address and the fork option is enabled, allows remote attackers to cause a denial of service (file descriptor. Rated low severity (CVSS 2.6), this vulnerability is remotely exploitable. No vendor patch available.

Denial Of Service Socat Dest Unreach
NVD
EPSS 0% CVSS 1.9
LOW PATCH Monitor

Stack-based buffer overflow in socat 1.3.0.0 through 1.7.2.2 and 2.0.0-b1 through 2.0.0-b6 allows local users to cause a denial of service (segmentation fault) via a long server name in the. Rated low severity (CVSS 1.9).

Buffer Overflow Denial Of Service Fedora +4
NVD
EPSS 0% CVSS 6.2
MEDIUM PATCH This Month

Heap-based buffer overflow in the xioscan_readline function in xio-readline.c in socat 1.4.0.0 through 1.7.2.0 and 2.0.0-b1 through 2.0.0-b4 allows local users to execute arbitrary code via the. Rated medium severity (CVSS 6.2).

RCE Buffer Overflow Socat +1
NVD

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