🔐 CVE Alert

CVE-2026-57189

UNKNOWN 0.0

Asterisk: Possible RED T.140 Generation Accumulation OOB Write

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

Asterisk is an open source private branch exchange and telephony toolkit. In affected deployments, an authenticated attacker may cause a `T.140 RED` out-of-bounds write during `generation accumulation` using carefully crafted packets, potentially allowing remote code execution or causing Asterisk to crash. The `chan_sip` channel driver must be installed and configured, and its `textsupport` option must be enabled; `textsupport` defaults to no. `The chan_sip driver was deprecated in Asterisk 20 and completely removed in all later versions.` Repository comparisons verify patch containment in Asterisk 20.20.1, 21.12.3, 22.10.1 and 23.4.1, and Certified Asterisk 20.7-cert11 and 22.8-cert3. The affected release-track scope remains unresolved: structured metadata includes later release tracks even though the advisory says the required `chan_sip` driver was removed there.

CWE CWE-787
Vendor asterisk
Product asterisk
Published Oct 27, 2026
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Affected Versions

asterisk / asterisk
< 20.20.1 >= 21.0.0-pre1, < 21.12.3 >= 22.0.0-pre1, < 22.10.1 >= 23.0.0-pre1, < 23.4.1
asterisk / certified-asterisk
< 20.7-cert11 >= 22.8-cert1-pre1, < 22.8-cert3

References

NVD ↗ CVE.org ↗ EPSS Data ↗
github.com: https://github.com/asterisk/asterisk/security/advisories/GHSA-j2mm-57pq-jh94 github.com: https://github.com/asterisk/asterisk/commit/0601c33d4edf8c8f221de91cead59460fb1e7180 github.com: https://github.com/asterisk/asterisk/commit/111487298a954a029daae941eac423f0609b1261 github.com: https://github.com/asterisk/asterisk/commit/536218a86b797996e8e8844deacc8207de373701 github.com: https://github.com/asterisk/asterisk/commit/a89b61d7c756f816c7fa5327ead9e889f1531202 github.com: https://github.com/asterisk/asterisk/commit/eaa108c68a32c080d7a168ef1d8bf784d5d830f4 github.com: https://github.com/asterisk/asterisk/commit/eef894282be203cb9e6d8e9692e9c360a0b569b4 github.com: https://github.com/asterisk/asterisk/commit/fde69a1f3ff17f507a1578ae27b528f43ceb5efd github.com: https://github.com/asterisk/asterisk/releases/tag/20.20.1 github.com: https://github.com/asterisk/asterisk/releases/tag/21.12.3 github.com: https://github.com/asterisk/asterisk/releases/tag/22.10.1 github.com: https://github.com/asterisk/asterisk/releases/tag/23.4.1 github.com: https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11 github.com: https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3 github.com: https://github.com/asterisk/asterisk/tree/24.0.0-pre1