CVE-2025-59375

Exp

libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.

Published: 2025-09-14 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-59375 is rated High Exploit Risk (68.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.28%). 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-2025-59375

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-2025-59375

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 2026-06-23 1.24% 1.28% +0.04%
2 2026-06-15 0.08% 1.24% +1.16%
3 2026-05-13 — 0.08% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-59375

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-2025-59375

OS Trackers for CVE-2025-59375

vendor priority summary link
alpine high CVE-2025-59375: 1 source package rows (expat); 5 state rows across 5 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 5, open 0. https://security.alpinelinux.org/vuln/CVE-2025-59375
debian not yet assigned CVE-2025-59375 not yet assigned priority: Debian including 4 source packages (expat, firefox, firefox-esr, thunderbird), 16 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 13, open 3. https://security-tracker.debian.org/tracker/CVE-2025-59375
redhat high — https://access.redhat.com/security/cve/CVE-2025-59375
suse high CVE-2025-59375 severity important: SUSE including 358 source package names (0.0.17-1.1:libexpat1-2.7.1-150400.3.31.1, 0.1.6-2.11:libexpat1-2.7.1-150400.3.31.1, …), 1020 product×package rows across 411 product lines (Container bci/kiwi, Container bci/spack, … (411 product lines)): Fixed 787, Known Affected 226, First Fixed 7. https://www.suse.com/security/cve/CVE-2025-59375/
ubuntu medium CVE-2025-59375 medium priority: Ubuntu including 23 source packages (apache2, apr-util, …), 178 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): needs-triage 84, not-affected 56, DNE 24, ignored 12, released 2. https://ubuntu.com/security/CVE-2025-59375

Affected software / configurations for CVE-2025-59375

Vendor Product Version Raw CPE
libexpat_project libexpat < 2.7.2 cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*

References for CVE-2025-59375

cvelogic Threat Intelligence