CVE-2025-14769— ipfw denial of service
Quick assessment
Affected
FreeBSD FreeBSD
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD存在安全漏洞，该漏洞源于tcp-setmss处理程序可能释放数据包数据并抛出错误，但未停止规则处理引擎，可能导致空指针取消引用和拒绝服务攻击。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-14769
Vulnerability Information
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Vulnerability Title
ipfw denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
In some cases, the `tcp-setmss` handler may free the packet data and throw an error without halting the rule processing engine. A subsequent rule can then allow the traffic after the packet data is gone, resulting in a NULL pointer dereference.
Maliciously crafted packets sent from a remote host may result in a Denial of Service (DoS) if the `tcp-setmss` directive is used and a subsequent rule would allow the traffic to pass.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
FreeBSD 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD存在安全漏洞，该漏洞源于tcp-setmss处理程序可能释放数据包数据并抛出错误，但未停止规则处理引擎，可能导致空指针取消引用和拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-14769
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Same Patch Batch · FreeBSD · 2026-03-09 · 6 CVEs total
| CVE-2026-3038 | Local DoS and possible privilege escalation via routing sockets | |
| CVE-2026-2261 | blocklistd(8) socket leak | |
| CVE-2025-15547 | Jail escape by a privileged user via nullfs | |
| CVE-2025-15576 | Jail chroot escape via fd exchange with a different jail | |
| CVE-2025-14558 | Remote code execution via ND6 Router Advertisements |
IV. Related Vulnerabilities
Same product: FreeBSD
-
CVE-2026-58094
TOCTOU race in POSIX shared memory large page configuration -
CVE-2026-58093
Kernel use-after-free via tty ioctls -
CVE-2026-58097
ppp(8): missing length validation in mp_SetEnddisc() -
CVE-2026-58096
ppp(8): missing length validation in LcpDecodeConfig() -
CVE-2026-58095
ppp(8): incorrect length calculation in mp_Enddisc()
Same vendor: FreeBSD
-
CVE-2026-58094
TOCTOU race in POSIX shared memory large page configuration -
CVE-2026-58093
Kernel use-after-free via tty ioctls -
CVE-2026-58097
ppp(8): missing length validation in mp_SetEnddisc() -
CVE-2026-58096
ppp(8): missing length validation in LcpDecodeConfig() -
CVE-2026-58095
ppp(8): incorrect length calculation in mp_Enddisc()
Same weakness: CWE-476
-
CVE-2026-108093
Gimp: gimp: denial of service via null pointer dereference i -
CVE-2026-104114
NULL pointer dereference in illumos nwamd door handler allow -
CVE-2026-108063
Libhangul: null pointer dereference in hanja_new() when look -
CVE-2026-107655
Cups: null pointer dereference via embedded job ticket comme -
CVE-2026-107890
CUPS漏洞：空指针解引用致服务崩溃
V. Comments for CVE-2025-14769
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