A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_qos_npn module. The w_rx_aar_register() function copies the attacker-controlled host field from the SIP `Via` header into a fixed 46-byte stack buffer without validating its length. An unauthenticated r…
Evidence confidence: Insufficient evidence
● Hype ● Reality
━ Hype Score (Perceived) ━ Reality threat priority. Definition changes are not new attacks.
Public exploit entries / repo candidates
Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs. Published 7 days ago. Exploitation evidence usually takes weeks to show up: a low reality score can mean there is no data yet, not that the flaw is mild.
Score evaluated: 2026-11-05 13:59:52.374647+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z