CVE-2025-24970 | SslHandler doesn't correctly validate packets which can lead to native crash when using native SSLEngine

Exp

Netty, an asynchronous, event-driven network application framework, has a vulnerability starting in version 4.1.91.Final and prior to version 4.1.118.Final. When a special crafted packet is received via SslHandler it doesn't correctly handle validation of such a packet in all cases which can lead to a native crash. Version 4.1.118.Final contains a patch. As workaround its possible to either disable the usage of the native SSLEngine or change the code manually.

Published: 2025-02-10 Last update: 2025-09-05 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-24970 is rated High Exploit Risk (71.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.98%). 2 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-2025-24970

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

Exploit prediction scoring system (EPSS) score for CVE-2025-24970

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 2026-03-21 1.69% 0.98% -0.71%
2 2026-03-04 0.34% 1.69% +1.36%
3 2025-11-27 — 0.34% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-24970

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/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:N)
No account or special rights needed—anonymous or random user is enough.
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.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2025-24970

GitHub Security Advisory for CVE-2025-24970

GHSA-4g8c-wm8x-jfhw · Severity: high · Ecosystem: maven — SslHandler doesn't correctly validate packets which can lead to native crash when using native SSLEngine

OS Trackers for CVE-2025-24970

vendor priority summary link
debian unimportant CVE-2025-24970 unimportant priority: Debian including 1 source packages (netty), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2025-24970
redhat high — https://access.redhat.com/security/cve/CVE-2025-24970
suse high CVE-2025-24970 severity important: SUSE including 13 source package names (5.0.4.7.19.1:netty-4.1.118-150200.4.29.2, 5.1.0.6.40:netty-4.1.118-150200.4.29.2, …), 35 product×package rows across 24 product lines (Container suse/manager/5.0/x86_64/server, Container suse/multi-linux-manager/5.1/x86_64/server, … (24 product lines)): Fixed 35. https://www.suse.com/security/cve/CVE-2025-24970/
ubuntu medium CVE-2025-24970 medium priority: Ubuntu including 1 source packages (netty), 10 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): needs-triage 8, ignored 2. https://ubuntu.com/security/CVE-2025-24970

Affected software / configurations for CVE-2025-24970

Vendor Product Version Raw CPE
netty netty >= 4.1.91, < 4.1.118 cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*
netapp active_iq_unified_manager — cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:*
netapp active_iq_unified_manager — cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
netapp active_iq_unified_manager — cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:*
netapp oncommand_insight — cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*

References for CVE-2025-24970

cvelogic Threat Intelligence