Is there a public exploit for CVE-2026-85033?

No public exploit for CVE-2026-85033 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-85033?

CVE-2026-85033 scores CVSS 4.6 (v3.1), rated medium.

What does CVE-2026-85033 affect?

CVE-2026-85033 affects zephyrproject Zephyr.

4.6 Medium

The AVRCP Target role in subsys/bluetooth/host/classic/avrcp.c keeps its vendor-dependent response transmit state in a per-connection…

CVE-2026-85033

The AVRCP Target role in subsys/bluetooth/host/classic/avrcp.c keeps its vendor-dependent response transmit state in a per-connection object selected by connection index (getavrcptg()), with the per-transfer context (tid, sentlen, and the BTAVRCPTGFLAGTXONGOING flag) stored in the userdata of the queued response netbuf. The AVCTP teardown handler avrcpdisconnected() did not cancel tg->vdrsptxwork and did not release the buffers still queued on tg->vdrsptxpending, so a link drop in the middle of a fragmented response left the buffer on the list with TXONGOING still set. A remote AVRCP Controller can trigger this deterministically: it issues a vendor-dependent command whose response exceeds one AVRCP fragment (for example GetElementAttributes or GetCapabilities), lets btavrcptgvendortxwork() emit the START fragment, and then drops the ACL link instead of sending REQUESTCONTINUINGRESPONSE. The AVCTP control channel requires an encrypted BR/EDR link (BTSECURITYL2), so the attacker must be a paired peer within radio range; no user interaction is needed. Because the Target objects are static and reused, the next connection landing on the same connection index finds the stale buffer at…

Assessment

CVSS: 4.6 (v3.1)
Severity: Medium
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 3 November 2026
Last updated: 3 November 2026
Affected: zephyrproject · Zephyr
Assigner: zephyr

CVSS vectorCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

At the source

EUVD (ENISA)

References

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