CVE-2026-72522
mediumpriority · track · 0EPSS 0.002 · 8 %ileDEEUUSEPSS · scored 2026-10-21
libexpat before 2.8.3 has an out-of-bounds read and resultant infinite loop because low surrogates are treated the same as high surrogates during Unicode processing in the *_toUtf16 functions.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (10)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-2718expat: Schwachstelle ermöglicht Denial of ServiceDeutsch2026-08-09csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle in expat ausnutzen, um einen Denial of Service Angriff durchzuführen.
- WID-SEC-W-2026-3642Meinberg LANTIME: Mehrere SchwachstellenDeutsch2026-09-29csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Meinberg LANTIME ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten offenzulegen oder zu manipulieren, Denial-of-Service-Zustände herbeizuführen, sowie weitere, nicht näher spezifizierte Angriffe zu starten.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://bugzilla.mozilla.org/show_bug.cgi?id=2053153cnnvd
- https://github.com/libexpat/libexpat/pull/1296cnnvd
- https://github.com/libexpat/libexpat/releasesPatchcnnvd
- https://bugzilla.mozilla.org/show_bug.cgi?id=2053153enisa_euvd
- https://github.com/libexpat/libexpat/pull/1296enisa_euvd
- http://www.openwall.com/lists/oss-security/2026/08/11/5nvd
- https://bugzilla.mozilla.org/show_bug.cgi?id=2053153nvd
- https://github.com/libexpat/libexpat/pull/1296nvd
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