CVE-2023-49786

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

5.29% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 92.2% of scored records. A rank, not a probability.

NVD base score

5.9 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2023-12-14 19:47Z2 YR AGO

Last updated

2025-02-13 17:18Z1 YR AGO

Reserved

2023-11-30

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

• CWE-703Improper Check or Handling of Exceptional ConditionsPillar
• CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class

Data version

5.1

Document digest

64c05f8dda0d917ac0c2fd25f2d113735132ab64f7899de6baac6111db39b816

• github.comhttps://github.com/asterisk/asterisk/security/advisories/GHSA-hxj9-xwr8-w8pqx_refsource_CONFIRM
• github.comhttps://github.com/asterisk/asterisk/commit/d7d7764cb07c8a1872804321302ef93bf62cba05x_refsource_MISC
• github.comhttps://github.com/EnableSecurity/advisories/tree/master/ES2023-01-asterisk-dtls-hello-racex_refsource_MISC
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2023/12/15/7
• packetstormsecurity.comhttp://packetstormsecurity.com/files/176251/Asterisk-20.1.0-Denial-Of-Service.html
• seclists.orghttp://seclists.org/fulldisclosure/2023/Dec/24
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/12/msg00019.html