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AEGLIX vulnerability intelligence

CVE-2026-42530

CRITICAL · CVSS 9.2 · Modified

Published: 2026-06-17 · Updated: 2026-10-26 · Source: NVD

Stored catalog record

Source record retrieved 2026-10-28T10:25:43.298273+00:00. Scheduled imports handle updates; this page does not assert that the provider was queried just now.

Vulnerability overview

NGINX Open Source has a vulnerability in the ngx_http_v3_module module. When NGINX Open Source is configured to use the HTTP/3 QUIC module, a remote unauthenticated attacker along with conditions beyond their control can use a specially crafted HTTP/3 session to reopen a QPACK encoder stream. This may cause a Use-after-Free in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Patch review priority

Critical technical severity

  • CVSS is at least 9.0; exploitation is not established by severity alone.

FIRST EPSS: 6.45% · percentile 93.7 · score date 2026-10-27.

EPSS estimates probability of exploitation in the next 30 days. It does not measure your exposure or prove exploitation. The elevated threshold is 10%; CISA KEV takes precedence. About FIRST EPSS ↗

Severity and scoring

CVSS score
9.2 · CRITICAL
CVSS version
4.0
CVSS vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weaknesses
CWE-416

CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.

Known exploitation and remediation

Not listed in the CISA catalog retrieved for this record. This does not establish that exploitation has not occurred.

Verify affected versions and patch availability in the vendor advisory before making changes.

Affected products and versions

  • cpe:2.3:a:f5:nginx_gateway_fabric:*:*:*:*:*:*:*:*

    From (inclusive): 1.3.0

    Through (inclusive): 1.6.2

  • cpe:2.3:a:f5:nginx_gateway_fabric:*:*:*:*:*:*:*:*

    From (inclusive): 2.0.0

    Before (exclusive): 2.6.4

  • cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*

    From (inclusive): 3.5.0

    Through (inclusive): 3.7.2

  • cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*

    From (inclusive): 5.0.0

    Before (exclusive): 5.5.1

  • cpe:2.3:a:f5:nginx_ingress_controller:4.0.0:*:*:*:*:*:*:*

  • cpe:2.3:a:f5:nginx_ingress_controller:4.0.1:*:*:*:*:*:*:*

  • cpe:2.3:a:f5:nginx_instance_manager:*:*:*:*:*:*:*:*

    From (inclusive): 2.17.0

    Through (inclusive): 2.22.0

  • cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*

    From (inclusive): 1.31.0

    Before (exclusive): 1.31.2

These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.

Advisories and references

Explore official sources

Read the official NVD record ↗

Explore the CISA catalog ↗

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