Is CVE-2025-46420 in the CISA KEV catalog?

No. CVE-2025-46420 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-46420?

CVE-2025-46420 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2025-46420?

CVE-2025-46420 has an EPSS score of 0.49% (38th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-46420?

Upgrade libsoup2.4 on debian 13 to 2.74.3-10.1 or later. Fixes are available for 14 affected products.

CVE & CISA-KEV Catalog

CVE-2025-46420

MEDIUM

6.5

CVSS v3

NVD

Description

A flaw was found in libsoup. It is vulnerable to memory leaks in the soup_header_parse_quality_list() function when parsing a quality list that contains elements with all zeroes.

CWE-401Missing Release of Memory (Memory Leak)

How to fix

Remediation Available

libsoup2.4Debian

Fixed in:2.74.3-10.1CVE-2025-46420

libsoupRed Hat / RHEL

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

libsoupRocky

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

libsoup-debuginfoRocky

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

libsoup-debuginfoRed Hat / RHEL

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

libsoup-debugsourceRed Hat / RHEL

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

libsoup-debugsourceRocky

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

libsoup-develRocky

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

libsoup-develRed Hat / RHEL

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-8.el8_10RHSA-2025:4560

Fixed in:0:2.62.3-2.el8_6.4RHSA-2025:4624

Fixed in:0:2.62.3-1.el8_2.4RHSA-2025:4538

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.62.3-2.el8_4.4RHSA-2025:4609

Fixed in:0:2.62.3-3.el8_8.4RHSA-2025:4568

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-10.el9_6.1RHSA-2025:7436

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_2.4RHSA-2025:4508

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

Fixed in:0:2.72.0-8.el9_4.4RHSA-2025:4440

Fixed in:0:2.72.0-8.el9_0.4RHSA-2025:4439

libsoup-2.4-1Ubuntu

Fixed in:2.74.3-6ubuntu1.3USN-7490-1

libsoup-3.0-0Ubuntu

Fixed in:3.0.7-0ubuntu1+esm3USN-7490-3

Fixed in:3.4.4-5ubuntu0.3USN-7490-3

libsoup2.4Ubuntu

Fixed in:2.52.2-1ubuntu0.3+esm1USN-7490-1

Fixed in:2.62.1-1ubuntu0.4+esm2USN-7490-1

Fixed in:2.70.0-1ubuntu0.3USN-7490-1

Fixed in:2.74.2-3ubuntu0.3USN-7490-1

Fixed in:2.74.3-6ubuntu1.3USN-7490-1

libsoup2.4-1Ubuntu

Fixed in:2.52.2-1ubuntu0.3+esm1USN-7490-1

Fixed in:2.62.1-1ubuntu0.4+esm2USN-7490-1

Fixed in:2.70.0-1ubuntu0.3USN-7490-1

Fixed in:2.74.2-3ubuntu0.3USN-7490-1

libsoup3Ubuntu

Fixed in:3.0.7-0ubuntu1+esm3USN-7490-3

Fixed in:3.4.4-5ubuntu0.3USN-7490-3

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.49%probability of exploitation in 30 days

38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Other references12

Related Vulnerabilities

Other CWE-401 (Missing Release of Memory (Memory Leak)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-13934	High	7.5	64%	-	Fix
CVE-2016-6304	High	7.5	63%	-	Fix
CVE-2019-12265	Medium	5.3	55%	-	Fix
CVE-2001-0136	Medium	5.0	45%	-	-
CVE-2016-4232	High	7.5	36%	-	-
CVE-2001-0543	Medium	5.0	21%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-30.