What is CVE-2019-7251?

CVE-2019-7251 is a medium-severity vulnerability in Digium Asterisk, classified under Integer Overflow or Wraparound. CVSS score: 6.5/10. Published 2019-03-28.

How severe is CVE-2019-7251?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Integer overflow in Digium Asterisk

CVE-2019-7251

An Integer Signedness issue (for a return code) in the res_pjsip_sdp_rtp module in Digium Asterisk versions 15.7.1 and earlier and 16.1.1 and earlier allows remote authenticated users to crash Asterisk via a specially crafted SDP protocol violation.

Vulnerability class: Integer Overflow

Published 2019-03-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.036 (89.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.037 · newest: 0.036 · change: -0.001

Affected products

Digium Asterisk

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

issues.asterisk.org/jira/browse/ASTERISK-28260 (Issue Tracking, Vendor Advisory)
downloads.asterisk.org/pub/security/AST-2019-001.html (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2019-7251?: CVE-2019-7251 is a medium-severity vulnerability in Digium Asterisk, classified under Integer Overflow or Wraparound. CVSS score: 6.5/10. Published 2019-03-28.
How severe is CVE-2019-7251?: Medium severity. CVSS v3 base score is 6.5 out of 10.