high 7.3

CVE-2025-0725 json

gzip integer overflow

published 2025-02-05 21 mo ago modified 2026-10-15 25 d ago also EUVD-2025-1837 , GHSA-vvqh-cqpj-5537 , JLSEC-2026-422

cvss: 7.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.8%; EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits: 0; none known

When libcurl is asked to perform automatic gzip decompression of content-encoded HTTP responses with the `CURLOPT_ACCEPT_ENCODING` option, **using zlib 1.2.0.3 or older**, an attacker-controlled integer overflow would make libcurl perform a buffer overflow.

Patch / fix

fixed in 21 distros 4 links 1

julia CURL_jll 8.13.0+0
julia LibCURL_jll 8.12.0+0
Siemens RUGGEDCOM RST2428P V3.3
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family V3.3
Siemens SCALANCE XCH328 V3.3
Siemens SCALANCE XCM324 V3.3
Siemens SCALANCE XCM328 V3.3
Siemens SCALANCE XCM332 V3.3
Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC) V3.3
Siemens SCALANCE XRM334 (230 V AC, 12xFO) V3.3
Siemens SCALANCE XRM334 (230 V AC, 8xFO) V3.3
Siemens SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) V3.3
Siemens SCALANCE XRM334 (24 V DC, 12xFO) V3.3
Siemens SCALANCE XRM334 (24 V DC, 8xFO) V3.3
Siemens SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) V3.3
Siemens SCALANCE XRM334 (2x230 V AC, 12xFO) V3.3
Siemens SCALANCE XRM334 (2x230 V AC, 8xFO) V3.3
Siemens SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) V3.3
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5

debian suse alpine azure linux

curl Debian 14, Debian 13 8.12.0+git20250209.89ed161+ds-1

debian advisories DEBIAN-CVE-2025-0725

curl Linux Micro 6.0 8.6.0-6.1
curl SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Micro 5.2 +3 more 7.66.0-150200.4.84.1
curl SLES 15 SP5-LTSS, SLES 15 SP4-LTSS, SLE Micro 5.5 +9 more 8.0.1-150400.5.62.1
curl SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 8.6.0-150600.4.21.1
curl SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 8.0.1-11.105.1

suse advisories SUSE-SU-2025:20144-1 SUSE-SU-2025:0372-1 SUSE-SU-2025:0371-1 SUSE-SU-2025:0370-1 SUSE-SU-2025:0369-1

curl Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 8.12.0-r0

alpine advisories ALPINE-CVE-2025-0725

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

mysql CBL-Mariner 2.0 8.0.40-4
mysql Azure Linux 3.0 8.0.42-1
curl Azure Linux 3.0 8.11.1-3

azure linux advisories AZL-56471 AZL-56498 AZL-56504

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

github.com/curl/curl@76f83f0 commit

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-0725 updated 2026-11-07 cvss 4.0

libcurl: Buffer Overflow in libcurl via zlib Integer Overflow

Red Hat Confidential Compute Attestation trustee-rhel9 Red Hat Enterprise Linux 6 curl, libcurl Red Hat Enterprise Linux 7 curl, libcurl Red Hat Enterprise Linux 8 curl, libcurl, libcurl-minimal Red Hat Enterprise Linux 9 curl, libcurl, curl-minimal, libcurl-minimal Red Hat Enterprise Linux 10 curl, s390utils

+2 more productsfewer

Red Hat JBoss Core Services jbcs-httpd24-curl jbcs-httpd24-curl Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8, openshift/ose-rhel-coreos-9

not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-26-043-06 updated 2026-02-25 cvss 7.3

Siemens SINEC OS

Siemens RUGGEDCOM RST2428P (6GK6242-6PA00) < 3.3
affected: fixed in V3.3 support.industry.siemens.com
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family < 3.3
affected: fixed in V3.3
Siemens SCALANCE XCH328 (6GK5328-4TS01-2EC2) < 3.3 Siemens SCALANCE XCM324 (6GK5324-8TS01-2AC2) < 3.3 Siemens SCALANCE XCM328 (6GK5328-4TS01-2AC2) < 3.3 Siemens SCALANCE XCM332 (6GK5332-0GA01-2AC2) < 3.3 Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC) (6GK5334-2TS01-2ER3) < 3.3 Siemens SCALANCE XRM334 (2x230 V AC, 8xFO) (6GK5334-2TS01-4AR3) < 3.3

+8 more productsfewer

Siemens SCALANCE XRM334 (2x230 V AC, 12xFO) (6GK5334-3TS01-4AR3) < 3.3 Siemens SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) (6GK5334-5TS01-4AR3) < 3.3 Siemens SCALANCE XRM334 (24 V DC, 8xFO) (6GK5334-2TS01-2AR3) < 3.3 Siemens SCALANCE XRM334 (24 V DC, 12xFO) (6GK5334-3TS01-2AR3) < 3.3 Siemens SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) (6GK5334-5TS01-2AR3) < 3.3 Siemens SCALANCE XRM334 (230 V AC, 8xFO) (6GK5334-2TS01-3AR3) < 3.3 Siemens SCALANCE XRM334 (230 V AC, 12xFO) (6GK5334-3TS01-3AR3) < 3.3 Siemens SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) (6GK5334-5TS01-3AR3) < 3.3

affected: fixed in V3.3 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 21 mo ago (2025-02-05)

Exploit prediction

1.80% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

hackerone.com https://hackerone.com/reports/2956023 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CNA	3.1	7.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
OSV	3.1	7.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected packages

ecosystem	package	affected	fixed in
julia	CURL_jll	<8.13.0+0	8.13.0+0
julia	LibCURL_jll	<8.12.0+0	8.12.0+0

Affected products

curl curl
Siemens RUGGEDCOM RST2428P
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family
Siemens SCALANCE XCH328
Siemens SCALANCE XCM324
Siemens SCALANCE XCM328
Siemens SCALANCE XCM332
Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC)
Siemens SCALANCE XRM334 (230 V AC, 12xFO)
Siemens SCALANCE XRM334 (230 V AC, 8xFO)
Siemens SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+)
Siemens SCALANCE XRM334 (24 V DC, 12xFO)
Siemens SCALANCE XRM334 (24 V DC, 8xFO)
Siemens SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+)
Siemens SCALANCE XRM334 (2x230 V AC, 12xFO)
Siemens SCALANCE XRM334 (2x230 V AC, 8xFO)
Siemens SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+)
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input

References

github.com /curl/curl/commit/76f83f0db23846e254d940ec7
patch, web
hackerone.com /reports/2956023
exploit, issue-tracking, web
curl.se /docs/CVE-2025-0725.json
vendor-advisory, web
curl.se /docs/CVE-2025-0725.html
vendor-advisory, web
openwall.com /lists/oss-security/2025/02/05/3
mailing-list, web
openwall.com /lists/oss-security/2025/02/06/2
mailing-list, web
openwall.com /lists/oss-security/2025/02/06/4
mailing-list, web
security.netapp.com /advisory/ntap-20250306-0009/
third-party-advisory, web
cert-portal.siemens.com /productcert/html/ssa-398330.html
cert-portal.siemens.com /productcert/html/ssa-089022.html
github.com /advisories/GHSA-vvqh-cqpj-5537
web
nvd.nist.gov /vuln/detail/CVE-2025-0725
web
security.netapp.com /advisory/ntap-20250306-0009
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary