ipfw denial of service
Priority MEDIUM 41CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-476.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01236 69th percentileScored 2026-11-07
Fix Fixed FreeBSD (FreeBSD): p7, p8
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| FreeBSD | FreeBSD | 14.3-RELEASE to before p7; 13.5-RELEASE to before p8 | p7, p8 | Patch available | CNA |
- FreeBSD VendorFreeBSD Affected 14.3-RELEASE to before p7; 13.5-RELEASE to before p8 Fixed in p7, p8 Patch available CNA
CPE configurations NVD · 15
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:freebsd:freebsd:13.5:-:*:*:*:*:*:* | 13.5 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.5:p1:*:*:*:*:*:* | 13.5 p1 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.5:p2:*:*:*:*:*:* | 13.5 p2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.5:p3:*:*:*:*:*:* | 13.5 p3 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.5:p4:*:*:*:*:*:* | 13.5 p4 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.5:p5:*:*:*:*:*:* | 13.5 p5 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.5:p6:*:*:*:*:*:* | 13.5 p6 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.5:p7:*:*:*:*:*:* | 13.5 p7 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:14.3:-:*:*:*:*:*:* | 14.3 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:14.3:p1:*:*:*:*:*:* | 14.3 p1 | Vulnerable | FreeBSD |
- cpe:2.3:o:freebsd:freebsd:13.5:-:*:*:*:*:*:* Versions 13.5 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.5:p1:*:*:*:*:*:* Versions 13.5 p1 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.5:p2:*:*:*:*:*:* Versions 13.5 p2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.5:p3:*:*:*:*:*:* Versions 13.5 p3 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.5:p4:*:*:*:*:*:* Versions 13.5 p4 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.5:p5:*:*:*:*:*:* Versions 13.5 p5 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.5:p6:*:*:*:*:*:* Versions 13.5 p6 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.5:p7:*:*:*:*:*:* Versions 13.5 p7 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:14.3:-:*:*:*:*:*:* Versions 14.3 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:14.3:p1:*:*:*:*:*:* Versions 14.3 p1 Vulnerable ·FreeBSD
Show 5 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:freebsd:freebsd:14.3:p2:*:*:*:*:*:* | 14.3 p2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:14.3:p3:*:*:*:*:*:* | 14.3 p3 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:14.3:p4:*:*:*:*:*:* | 14.3 p4 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:14.3:p5:*:*:*:*:*:* | 14.3 p5 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:14.3:p6:*:*:*:*:*:* | 14.3 p6 | Vulnerable | FreeBSD |
- cpe:2.3:o:freebsd:freebsd:14.3:p2:*:*:*:*:*:* Versions 14.3 p2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:14.3:p3:*:*:*:*:*:* Versions 14.3 p3 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:14.3:p4:*:*:*:*:*:* Versions 14.3 p4 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:14.3:p5:*:*:*:*:*:* Versions 14.3 p5 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:14.3:p6:*:*:*:*:*:* Versions 14.3 p6 Vulnerable ·FreeBSD
Remediation
- Fix · CNA FreeBSD (FreeBSD) Fixed in p7, p8
Timeline
- 2026-10-02 Threatist record created from CVE-2025-14769
- 2026-10-03 Alias added: GHSA-qx99-h65p-8xpj
References
More Freebsd vulnerabilities
- TI-2011-04182 Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT… CVSS 2.0HIGH 10.0
- TI-2007-03684 Integer overflow in print-bgp.c in the BGP dissector in tcpdump 3.9.6 and earlier allows… CVSS 3.1CRITICAL 9.8
- TI-2002-00376 Integer overflow in xdr_array function in RPC servers for operating systems that use… CVSS 3.1CRITICAL 9.8
- TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
- TI-2003-00437 Off-by-one error in the fb_realpath() function, as derived from the realpath function in… CVSS 3.1CRITICAL 9.8
- TI-2003-00642 The prescan function in Sendmail 8.12.9 allows remote attackers to execute arbitrary code… CVSS 2.0HIGH 10.0
Sources
- CVE-2025-14769 · CVE Program
- CVE-2025-14769 · NVD
- FIRST EPSS
- GHSA-qx99-h65p-8xpj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences