Paper/Archive/CVE-2025-47154

CVE-2025-47154

Ladybird Ladybird — LibJS in Ladybird before f5a6704 mishandles the freeing of the vector that arguments_list references, leading to a use-after-free, and al…

EPSS 0.7%public exploit CVSS 9.0

critical.is priorityof 100

CVSS 9.0 (CNA)9.0 / 10 × 3027.0 Not in CISA KEV+300.0 EPSS percentile 52.4.524 × 2010.5 Exploit: SSVC poc+1010.0 SSVC exploitation: poc+100.0

Description · from the CVE record

LibJS in Ladybird before f5a6704 mishandles the freeing of the vector that arguments_list references, leading to a use-after-free, and allowing remote attackers to execute arbitrary code via a crafted .js file. NOTE: the GitHub README says "Ladybird is in a pre-alpha state, and only suitable for use by developers."

Affected

ProductAffectedFixed inSource

Ladybird< f5a670421954fc7130c3685b713c621b29516669f5a670421954fc7130c3685b713c621b29516669CNA

Scores by source

mitre (CNA)9.0CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

refnews.ycombinator.com/item?id=43852096 exploitjessie.cafe/posts/pwning-ladybirds-libjs refgithub.com/LadybirdBrowser/ladybird/commit/f5a670421954fc7130c3685b713c621b29516669