Back to CVE records
High 7.5Published Sep 15, 2025
CVE-2025-59375libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
Updated under an hour ago ()
Does this affect you?
It affects libexpat project libexpat and 19 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Start free and add your stack
Free account, 1 product
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:H/RL:T/RC:C
- Weakness (CWE)
- CWE-770
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Not yet received
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
libexpat project libexpat libexpat_project:libexpat (from the name) | before 2.7.2 | CNA record |
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XCH328 siemens:scalance_xch328 (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XCM324 siemens:scalance_xcm324 (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XCM328 siemens:scalance_xcm328 (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XCM332 siemens:scalance_xcm332 (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC) siemens:scalance_xrh334_24_v_dc_8xfo_cc (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XRM334 (230 V AC, 12xFO) siemens:scalance_xrm334_230_v_ac_12xfo (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XRM334 (230 V AC, 8xFO) siemens:scalance_xrm334_230_v_ac_8xfo (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) siemens:scalance_xrm334_230v_ac_2x10g_24xsfp_8xsfp+ (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XRM334 (24 V DC, 12xFO) siemens:scalance_xrm334_24_v_dc_12xfo (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XRM334 (24 V DC, 8xFO) siemens:scalance_xrm334_24_v_dc_8xfo (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) siemens:scalance_xrm334_24v_dc_2x10g_24xsfp_8xsfp+ (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XRM334 (2x230 V AC, 12xFO) siemens:scalance_xrm334_2x230_v_ac_12xfo (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XRM334 (2x230 V AC, 8xFO) siemens:scalance_xrm334_2x230_v_ac_8xfo (from the name) | before V3.3 | CISA ADP |
Siemens SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) siemens:scalance_xrm334_2x230v_ac_2x10g_24xsfp_8xsfp+ (from the name) | before V3.3 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.5 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.5 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.5 | CISA ADP |
References
- https://github.com/libexpat/libexpat/issues/1018
- https://github.com/libexpat/libexpat/pull/1034
- https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74
- https://issues.oss-fuzz.com/issues/439133977
- https://github.com/libexpat/libexpat/blob/R_2_7_2/expat/Changes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.