CVE-2025-1010

HIGHNVD 8.89.8▲

8.8

An attacker could have caused a use-after-free via the Custom Highlight API, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.

CVSS v3: 8.8
EG Score: 9.8(medium)
EPSS: 34.4%
KEV: Not listed

Published

February 4, 2025

Last Modified

April 13, 2026

Advisory Details (8)

Auto-updated May 22, 2026

Patch available.

generic Patch Available

[SECURITY] [DLA 4045-1] thunderbird security update

https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html

generic Patch Available

[SECURITY] [DLA 4044-1] firefox-esr security update

https://lists.debian.org/debian-lts-announce/2025/02/msg00005.html

generic

Security Vulnerabilities fixed in Thunderbird 135 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2025-11/

generic

Security Vulnerabilities fixed in Thunderbird ESR 128.7 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2025-10/

generic

Security Vulnerabilities fixed in Firefox ESR 128.7 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2025-09/

generic

Security Vulnerabilities fixed in Firefox ESR 115.20 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2025-08/

generic

Security Vulnerabilities fixed in Firefox 135 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2025-07/

generic

1936982 - (CVE-2025-1010) heap-use-after-free at remove in mozilla::dom::AbstractRange::UnregisterClosestCommonInclusiveAncestor

https://bugzilla.mozilla.org/show_bug.cgi?id=1936982

Patch Availability(21)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	firefox-mozsymbols (135.0+build2-0ubuntu0.20.04.1) @ focal	2026-05-21	ubuntu
ubuntu	xul-ext-lightning (1:128.12.0+build1-0ubuntu0.22.04.1) @ jammy	2026-05-21	ubuntu
redhat	thunderbird-0:128.7.0-1.el8_2	2025-02-12	redhat
redhat	thunderbird-0:128.7.0-1.el8_4	2025-02-12	redhat
redhat	thunderbird-0:128.7.0-1.el8_6	2025-02-12	redhat
redhat	thunderbird-0:128.7.0-1.el8_8	2025-02-12	redhat
redhat	firefox-0:128.7.0-1.el8_10	2025-02-11	redhat
redhat	thunderbird-0:128.7.0-1.el8_10	2025-02-11	redhat
redhat	thunderbird-0:128.7.0-1.el9_2	2025-02-11	redhat
redhat	thunderbird-0:128.7.0-1.el9_4	2025-02-11	redhat
redhat	thunderbird-0:128.7.0-1.el9_0	2025-02-11	redhat
redhat	thunderbird-0:128.7.0-1.el9_5	2025-02-10	redhat
redhat	firefox-0:128.7.0-1.el9_0	2025-02-06	redhat
redhat	firefox-0:128.7.0-1.el9_2	2025-02-06	redhat
redhat	firefox-0:128.7.0-1.el8_2	2025-02-06	redhat
redhat	firefox-0:128.7.0-1.el8_8	2025-02-06	redhat
redhat	firefox-0:128.7.0-1.el7_9	2025-02-06	redhat
redhat	firefox-0:128.7.0-1.el8_6	2025-02-06	redhat
redhat	firefox-0:128.7.0-1.el9_4	2025-02-06	redhat
redhat	firefox-0:128.7.0-1.el8_4	2025-02-06	redhat
redhat	firefox-0:128.7.0-1.el9_5	2025-02-05	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-416Use After Free

All Vendor Advisories

(21)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 59× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-23 21:32 UTCEPSS rescore
2026-06-22 14:25 UTCEPSS rescore
2026-06-22 14:25 UTCEPSS rescore
2026-06-22 02:56 UTCOSV refresh
2026-06-21 14:56 UTCEPSS rescore
2026-06-21 14:56 UTCEPSS rescore
2026-06-21 01:59 UTCEPSS rescore
2026-06-21 01:59 UTCEPSS rescore
2026-06-19 19:25 UTCEPSS rescore
2026-06-19 19:25 UTCEPSS rescore
2026-06-18 17:52 UTCEPSS rescore
2026-06-18 17:52 UTCEPSS rescore
2026-06-17 17:52 UTCEPSS rescore
2026-06-16 17:52 UTCEPSS rescore
2026-06-15 17:48 UTCEPSS rescore
2026-06-14 23:17 UTCEPSS rescore
2026-06-13 22:59 UTCEPSS rescore
2026-06-13 22:59 UTCEPSS rescore
2026-06-12 23:11 UTCEPSS rescore
2026-06-11 13:59 UTCEPSS rescore
2026-06-10 22:18 UTCEPSS rescore
2026-06-10 13:21 UTCEPSS rescore
2026-06-08 14:16 UTCEPSS rescore
2026-06-08 14:16 UTCEPSS rescore
2026-06-07 15:24 UTCEPSS rescore

Show 54 more

2026-06-06 13:47 UTCEPSS rescore
2026-06-06 13:47 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 06:10 UTCEPSS rescore
2026-06-05 06:10 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-03 20:39 UTCOSV refresh
2026-06-02 20:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 00:16 UTCEPSS rescore
2026-05-31 00:16 UTCEPSS rescore
2026-05-29 13:44 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-27 13:40 UTCEPSS rescore
2026-05-27 13:40 UTCEPSS rescore
2026-05-27 13:40 UTCEPSS rescore
2026-05-27 13:40 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-24 16:56 UTCEPSS rescore
2026-05-23 15:20 UTCEPSS rescore
2026-05-22 21:16 UTCEPSS rescore
2026-05-22 21:16 UTCEPSS rescore
2026-05-22 21:16 UTCEPSS rescore
2026-05-21 22:42 UTCEPSS rescore
2026-05-21 18:04 UTCEG score recompute
2026-05-21 18:04 UTCVendor advisory
2026-05-21 18:04 UTCGHSA enrichment
2026-05-20 22:37 UTCEPSS rescore
2026-05-20 22:37 UTCEPSS rescore
2026-05-20 22:37 UTCEPSS rescore
2026-05-20 22:37 UTCEPSS rescore
2026-05-20 22:37 UTCEPSS rescore
2026-05-20 11:21 UTCEPSS rescore
2026-05-20 11:21 UTCEPSS rescore
2026-05-20 11:21 UTCEPSS rescore
2026-05-20 11:21 UTCEPSS rescore
2026-05-20 11:21 UTCEPSS rescore
2026-05-18 21:30 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-1010?

CVE-2025-1010 is a high vulnerability published on February 4, 2025. An attacker could have caused a use-after-free via the Custom Highlight API, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.

When was CVE-2025-1010 disclosed?

CVE-2025-1010 was first published in the National Vulnerability Database on February 4, 2025, with the most recent update on April 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2025-1010 actively exploited?

CVE-2025-1010 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 34.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2025-1010?

CVE-2025-1010 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.

How do I remediate CVE-2025-1010?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-1010, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2025-1010

Explore →

Is Your Infrastructure Affected by CVE-2025-1010?

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CVE-2025-1010

Published

Last Modified

Advisory Details (8)

[SECURITY] [DLA 4045-1] thunderbird security update

[SECURITY] [DLA 4044-1] firefox-esr security update

Security Vulnerabilities fixed in Thunderbird 135 — Mozilla

Security Vulnerabilities fixed in Thunderbird ESR 128.7 — Mozilla

Security Vulnerabilities fixed in Firefox ESR 128.7 — Mozilla

Security Vulnerabilities fixed in Firefox ESR 115.20 — Mozilla

Security Vulnerabilities fixed in Firefox 135 — Mozilla

1936982 - (CVE-2025-1010) heap-use-after-free at remove in mozilla::dom::AbstractRange::UnregisterClosestCommonInclusiveAncestor

Patch Availability(21)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-1010?

Same vendor

Same CWE

CVE-2025-1010

📅 Published

🔄 Last Modified

📋 Advisory Details (8)

[SECURITY] [DLA 4045-1] thunderbird security update

[SECURITY] [DLA 4044-1] firefox-esr security update

Security Vulnerabilities fixed in Thunderbird 135 — Mozilla

Security Vulnerabilities fixed in Thunderbird ESR 128.7 — Mozilla

Security Vulnerabilities fixed in Firefox ESR 128.7 — Mozilla

Security Vulnerabilities fixed in Firefox ESR 115.20 — Mozilla

Security Vulnerabilities fixed in Firefox 135 — Mozilla

1936982 - (CVE-2025-1010) heap-use-after-free at remove in mozilla::dom::AbstractRange::UnregisterClosestCommonInclusiveAncestor

Patch Availability(21)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2025-1010?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

Advisory Details (8)

Frequently asked(5)

Related CVEs(same vendor + same CWE)