CVE-2013-7439
HighSummary
Multiple off-by-one errors in the MakeBigReq and SetReqLen macros in include/X11/Xlibint.h in X11R6.x and libX11 before version 1.6.0 may allow remote attackers to have unspecified impact via a crafted request, leading to a buffer overflow.
Risk Assessment
An attacker could exploit these errors to trigger a buffer overflow, potentially allowing for arbitrary code execution or system crashes.
Recommendation
It is recommended to upgrade to libX11 version 1.6.0 or later to mitigate these vulnerabilities.
Related vulnerabilities
- CVE-2026-87701Critical
Improper neutralization of special elements in output used by a downstream component ('injection') in Azure Cosmos DB allows an authorized attacker to elevate privileges over a network.
- CVE-2026-85889Critical
Missing authentication for a critical function in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-85885Critical
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.
- CVE-2026-83944Critical
Improper access control in Azure Logic Apps allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-77903Critical
Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-70200Critical
Improper limitation of a pathname to a restricted directory ('path traversal') in Azure Logic Apps allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-70009Critical
Improper limitation of a pathname to a restricted directory ('path traversal') in Azure Arc allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-69865Critical
Authorization bypass through a user-controlled key in Microsoft Container Registry allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-69399Critical
Elevation of Privilege vulnerability in Azure Arc. Technical details were not provided in the description.
- CVE-2026-76949Critical
A vulnerability in the ash_authentication library (Elixir) allows an attacker who can plant a remember-me cookie in a victim's browser to replace the victim's authenticated session with one for the attacker's own account. The issue stems from a mismatch between the session keys used by the guard and the reader, causing remember-me sign-in to run on every request.
Original NVD description (English source)
Multiple off-by-one errors in the (1) MakeBigReq and (2) SetReqLen macros in include/X11/Xlibint.h in X11R6.x and libX11 before 1.6.0 allow remote attackers to have unspecified impact via a crafted request, which triggers a buffer overflow.