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Vulnerability record · CVE-2014-3676 · published 22 October 2014

CVE-2014-3676: Redhat shim out-of-bounds write vulnerability

Redhat · Shim

Heap-based buffer overflow in Shim allows remote attackers to execute arbitrary code via a crafted IPv6 address, related to the "tftp:// DHCPv6 boot option."

7.5 CVSS 2.0 High EPSS 5.2% · top 7.8% CWE-787 · Out-of-bounds write
7.5CVSS 2.0 base score
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Heap-based buffer overflow in Shim allows remote attackers to execute arbitrary code via a crafted IPv6 address, related to the "tftp:// DHCPv6 boot option."

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://rhn.redhat.com/errata/RHSA-2014-1801.html Broken Link
http://www.openwall.com/lists/oss-security/2014/10/13/4 ExploitMailing List
http://www.securityfocus.com/bid/70409 Third Party AdvisoryVDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/96988 Third Party AdvisoryVDB Entry
http://rhn.redhat.com/errata/RHSA-2014-1801.html Broken Link
http://www.openwall.com/lists/oss-security/2014/10/13/4 ExploitMailing List
http://www.securityfocus.com/bid/70409 Third Party AdvisoryVDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/96988 Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.3CVE-2023-40547Redhat shim out-of-bounds write vulnerabilityA remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This …EPSS 5.4%7.8CVE-2022-28737Redhat shim out-of-bounds write vulnerabilityThere's a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle_image() function takes into acc…EPSS 0.33%7.5CVE-2014-3677Redhat shim vulnerabilityUnspecified vulnerability in Shim might allow attackers to execute arbitrary code via a crafted MOK list, which triggers memory corruption.EPSS 2.7%7.4CVE-2023-40548Redhat shim integer overflow vulnerabilityA buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed …EPSS 0.44%5.5CVE-2023-40546Redhat shim null pointer dereference vulnerabilityA flaw was found in Shim when an error happened while creating a new ESL variable. If Shim fails to create the new variable, it tries to print an err…EPSS 0.44%5.5CVE-2023-40549Redhat shim out-of-bounds read vulnerabilityAn out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an atta…EPSS 0.41%5.5CVE-2023-40550Redhat shim out-of-bounds read vulnerabilityAn out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's…EPSS 0.40%5.1CVE-2023-40551Redhat shim out-of-bounds read vulnerabilityA flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during t…EPSS 0.40%

Source: NIST National Vulnerability Database (record CVE-2014-3676), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.