CVE-2025-49832

Asterisk is an open source private branch exchange and telephony toolkit. In versions up to and including 18.26.2, between 20.00.0 and 20.15.0, 20.7-cert6, 21.00.0, 22.00.0 through 22.5.0, there is a remote DoS and possible RCE condition in `asterisk/res/res_stir_shaken /verification.c` that can be exploited when an attacker can set an arbitrary Identity header, or STIR/SHAKEN is enabled, with verification set in the SIP profile associated with the endpoint to be attacked. This is fixed in versions 18.26.3, 20.7-cert6, 20.15.1, 21.10.1 and 22.5.1.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub_MCNA
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 43%
VendorProductVersion
sangomaasterisk
𝑥
< 18.26.3
sangomaasterisk
20.0.0 ≤
𝑥
< 20.15.1
sangomaasterisk
21.0.0 ≤
𝑥
< 21.10.1
sangomaasterisk
22.0.0 ≤
𝑥
< 22.5.1
sangomacertified_asterisk
𝑥
≤ 18.9
sangomacertified_asterisk
20.7:cert1
sangomacertified_asterisk
20.7:cert1-rc1
sangomacertified_asterisk
20.7:cert1-rc2
sangomacertified_asterisk
20.7:cert2
sangomacertified_asterisk
20.7:cert3
sangomacertified_asterisk
20.7:cert4
sangomacertified_asterisk
20.7:cert5
sangomacertified_asterisk
20.7:cert6
𝑥
= Vulnerable software versions