CVE-2026-57185
Asterisk is an open source private branch exchange and telephony toolkit
- Risk score
- 47/100
- CVSS
- 6.5 v3.1
- Exploit chance (30 days)
- 0.5%
- Published
- 27 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an authenticated attacker may crash Asterisk through a buffer over-read in the PJSIP MWI body parser by sending a carefully crafted SIP NOTIFY re…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.5 medium
References
- https://github.com/asterisk/asterisk/commit/07aec894a1fdfa7fa989d3ab40fdf0dcda8005bb
- https://github.com/asterisk/asterisk/commit/1039bed76fa3248f58b6880e4b3f1421ef98b01f
- https://github.com/asterisk/asterisk/commit/1b2d99d8eb9206d37fd47115996f67fd28bd056f
- https://github.com/asterisk/asterisk/commit/3100a0d331affbf0995b8c57aaddb31cf3971f6e
- https://github.com/asterisk/asterisk/commit/57ce484a45b098de417f19265c95c64497782e36
- https://github.com/asterisk/asterisk/commit/919f2ffda03329c9014bedcb3c7789d38660c9ed
- https://github.com/asterisk/asterisk/commit/dafff9fb60281817225f1ce6371a5aa2fbb967a4
- https://github.com/asterisk/asterisk/releases/tag/20.20.1
- https://github.com/asterisk/asterisk/releases/tag/21.12.3
- https://github.com/asterisk/asterisk/releases/tag/22.10.1
Original description
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an authenticated attacker may crash Asterisk through a buffer over-read in the `PJSIP MWI body parser` by sending a carefully crafted `SIP NOTIFY` request. The attacker must pass SIP authentication using either a username/password or `source IP address matching`. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
Last activity 27 Oct 2026. Patch Forecast updates every hour.