Ap3g1-k9w7-tar.153-3.jf15.tar -

Access points running 12.4(25e)JA or 15.2(2)JB often suffer from memory fragmentation and SSLv3 vulnerabilities. Moving to 15.3(3)JF15 stabilizes the CAPWAP control plane and enables AES-256 CCMP for WPA2-Enterprise.

Let us break down the nomenclature:

Cisco uses a strict, uniform naming convention for its Access Point OS images . Breaking down the file name reveals the following information: Technical Context Access Point Generation 1 ap3g1-k9w7-tar.153-3.jf15.tar

Denotes the software mode. The k9 stands for cryptographic capabilities (typically Triple DES and AES support). The w7 indicates that this is an Autonomous image (standalone). By contrast, an image with w8 indicates a lightweight (CAPWAP) image meant to be managed by a wireless LAN controller (WLC).

From this .tar , analysts can extract:

The 15.3(3)JF train was a significant release for the Aironet 3600/3700 series. Here is what JF15 specifically improves:

Deploying the image converts the access point into an Autonomous unit. In autonomous mode, the AP can function completely independently, broadcasting SSIDs, handling local DHCP, managing WPA2/WPA3 security, and acting as a bridge without requiring a physical or virtual WLC. Access points running 12

: This identifies the hardware platform. The "3g1" series specifically corresponds to the Cisco Aironet 3500 series access points.

| CVE | Description | Affected? | Fixed in | |------------|-------------|-----------|-----------| | CVE-2019-15271 | AP DoS via crafted HTTPS request | Yes | 15.3(3)JF16 | | CVE-2019-12643 | 802.11r overflow | Yes | 15.3(3)JF17 | | CVE-2020-3517 | CAPWAP DTLS memory leak | Yes | 15.3(3)JF18 | | CVE-2021-1530 | Privilege escalation in CLI | Yes | 15.3(3)JF20 | Breaking down the file name reveals the following