Threat Advisory

Apache HTTP Server Vulnerability Exposes RCE Attacks

Threat: Vulnerability
Targeted Region: Global
Targeted Sector: Technology & IT
Criticality: High
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EXECUTIVE SUMMARY:

Multiple security vulnerabilities have been identified in Apache HTTP Server versions 2.4.66 and earlier, which could allow an attacker to execute remote code, escalate privileges, or cause a denial-of-service condition. The affected software is widely used in enterprise environments and has a significant global footprint, posing a substantial threat to critical infrastructure. If exploited, these vulnerabilities could lead to unauthorized access, data theft, or disruption of business operations. The severity of the issues underscores the importance of prompt action to mitigate the risks.[/subscribe_to_unlock_form]

EXECUTIVE SUMMARY:

Multiple security vulnerabilities have been identified in Apache HTTP Server versions 2.4.66 and earlier, which could allow an attacker to execute remote code, escalate privileges, or cause a denial-of-service condition. The affected software is widely used in enterprise environments and has a significant global footprint, posing a substantial threat to critical infrastructure. If exploited, these vulnerabilities could lead to unauthorized access, data theft, or disruption of business operations. The severity of the issues underscores the importance of prompt action to mitigate the risks.[emaillocker id="1283"]

  • CVE-2026-23918 with a CVSS score of 8.8 - This High-rated vulnerability is a double-free memory corruption bug triggered within Apache’s HTTP/2 protocol implementation during an “early stream reset” sequence, enabling an attacker to redirect execution flow and potentially execute remote code.
  • CVE-2026-24072 with a CVSS score of 5.3 - This Moderate-rated vulnerability targets mod_rewrite’s use of ap_expr expression evaluation, allowing local .htaccess authors to read arbitrary files with the privileges of the httpd user and escalating privileges.
  • CVE-2026-28780 with a CVSS score of 4.3 - This Low-rated vulnerability is a heap-based buffer overflow in mod_proxy_ajp via ajp_msg_check_header(), which could allow a malicious AJP server to send a crafted AJP message causing the module to write 4 attacker-controlled bytes beyond the end of a heap buffer.
  • CVE-2026-29168 with a CVSS score of 3.5 - This Low-rated vulnerability is an uncapped resource allocation vulnerability in mod_md’s OCSP response handler, which could allow attackers to exhaust server resources via oversized OCSP response data.
  • CVE-2026-29169 with a CVSS score of 2.1 - This Low-rated vulnerability is a NULL pointer dereference in mod_dav_lock, which could allow an attacker to crash the server using a maliciously crafted request.

The identified vulnerabilities pose a significant risk to enterprise infrastructure worldwide, requiring immediate attention from administrators. If exploited, these vulnerabilities could lead to severe business consequences, including unauthorized access, data theft, or disruption of critical operations.

RECOMMENDATION:

  • We recommend you to update Apache HTTP Server to version 2.4.67.

REFERENCES:

The following reports contain further technical details:
https://cybersecuritynews.com/apache-http-server-rce/

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