CVE-2025-54995 | Asterisk remotely exploitable leak of RTP UDP ports and internal resources

Exp

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 18.26.4 and 18.9-cert17, RTP UDP ports and internal resources can leak due to a lack of session termination. This could result in leaks and resource exhaustion. This issue has been patched in versions 18.26.4 and 18.9-cert17.

Published: 2025-08-28 Last update: 2025-11-03 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-54995 is rated High Exploit Risk (69.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.42%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2025-54995

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2025-54995

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-24 1.27% 1.42% +0.14%
2 2026-05-14 1.09% 1.27% +0.19%
3 2026-05-03 — 1.09% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-54995

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2025-54995

OS Trackers for CVE-2025-54995

vendor priority summary link
alpine medium CVE-2025-54995: 1 source package rows (asterisk); 64 state rows across 5 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 0, open 64. https://security.alpinelinux.org/vuln/CVE-2025-54995
debian not yet assigned CVE-2025-54995 not yet assigned priority: Debian including 1 source packages (asterisk), 2 status rows across 2 suites (bullseye, sid): resolved 2. https://security-tracker.debian.org/tracker/CVE-2025-54995
ubuntu medium CVE-2025-54995 medium priority: Ubuntu including 1 source packages (asterisk), 8 status rows across 8 suites (bionic, focal, jammy, noble, plucky, questing, upstream, xenial): needs-triage 5, not-affected 2, released 1. https://ubuntu.com/security/CVE-2025-54995

Affected software / configurations for CVE-2025-54995

Vendor Product Version Raw CPE
sangoma asterisk < 18.26.4 cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*
sangoma certified_asterisk < 18.9 cpe:2.3:a:sangoma:certified_asterisk:*:*:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert1:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert1-rc1:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert10:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert11:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert12:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert13:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert14:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert15:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert16:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert3:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert4:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert5:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert6:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert7:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert8:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert8-rc1:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert8-rc2:*:*:*:*:*:*
sangoma certified_asterisk 18.9 cpe:2.3:a:sangoma:certified_asterisk:18.9:cert9:*:*:*:*:*:*

References for CVE-2025-54995

cvelogic Threat Intelligence