CVE-2026-49420
HIGH
MEDIUM
Priority: 0.04
BB Relevance:
63/100
Published: 2026-08-19
Modified: 2026-11-09
First seen: 2026-11-09
Status: active
Attack Surface
Adjacent
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Adjacent
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
Description
The RTSP handler in libalias rewrote outgoing packets into a fixed-length stack buffer without checking whether the rewritten data fit in the buffer, or whether the result fit back in the original packet. A host sending crafted RTSP traffic from inside a NAT gateway using libalias can overflow a stack buffer, potentially achieving remote code execution in the kernel (when using ipfw(4) NAT) or in the natd(8) process (which generally runs as the root user).
Weakness Classification (1)
Affected Software (38)
| Vendor | Product | Version |
|---|---|---|
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 15.0 |
| freebsd | freebsd | 15.0 |
| freebsd | freebsd | 15.0 |
| freebsd | freebsd | 15.0 |
| freebsd | freebsd | 15.0 |
| freebsd | freebsd | 15.0 |
Showing 30 of 38 entries
References & Advisories (1)
Vendor Advisory