CVE-2023-1945

MEDIUMNVD 6.56.5—

6.5

Unexpected data returned from the Safe Browsing API could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 102.10 and Firefox ESR < 102.10.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 46.1%
KEV: Not listed

Published

June 2, 2023

Last Modified

January 9, 2025

References (6)

security@mozillahttps://bugzilla.mozilla.org/show_bug.cgi?id=1777588
security@mozillahttps://www.mozilla.org/security/advisories/mfsa2023-14/
security@mozillahttps://www.mozilla.org/security/advisories/mfsa2023-15/
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1777588
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2023-14/
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2023-15/

Patch Availability(17)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	thunderbird-locale-id (1:102.10.0+build2-0ubuntu0.22.10.1) @ kinetic	2026-05-25	ubuntu
redhat	thunderbird-0:102.10.0-2.el9_0	2023-04-17	redhat
redhat	thunderbird-0:102.10.0-2.el8_2	2023-04-17	redhat
redhat	thunderbird-0:102.10.0-2.el9_1	2023-04-17	redhat
redhat	thunderbird-0:102.10.0-2.el8_6	2023-04-17	redhat
redhat	thunderbird-0:102.10.0-2.el8_4	2023-04-17	redhat
redhat	thunderbird-0:102.10.0-2.el7_9	2023-04-17	redhat
redhat	thunderbird-0:102.10.0-2.el8_1	2023-04-17	redhat
redhat	thunderbird-0:102.10.0-2.el8_7	2023-04-17	redhat
redhat	firefox-0:102.10.0-1.el9_0	2023-04-14	redhat
redhat	firefox-0:102.10.0-1.el8_6	2023-04-14	redhat
redhat	firefox-0:102.10.0-1.el7_9	2023-04-14	redhat
redhat	firefox-0:102.10.0-1.el8_7	2023-04-14	redhat
redhat	firefox-0:102.10.0-1.el8_1	2023-04-14	redhat
redhat	firefox-0:102.10.0-1.el8_2	2023-04-14	redhat
redhat	firefox-0:102.10.0-1.el8_4	2023-04-14	redhat
redhat	firefox-0:102.10.0-1.el9_1	2023-04-14	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-787Out-of-bounds Write

All Vendor Advisories

(17)

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 14× in last 7d / 60× 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 21:31 UTCEPSS rescore
2026-06-23 21:31 UTCEPSS rescore
2026-06-22 14:24 UTCEPSS rescore
2026-06-22 14:24 UTCEPSS rescore
2026-06-21 14:55 UTCEPSS rescore
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2026-06-21 01:58 UTCEPSS rescore
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2026-06-19 19:24 UTCEPSS rescore
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2026-06-18 17:51 UTCEPSS rescore
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2026-06-17 17:51 UTCEPSS rescore
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2026-06-16 17:51 UTCEPSS rescore
2026-06-16 17:51 UTCEPSS rescore
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2026-06-15 17:47 UTCEPSS rescore
2026-06-14 23:16 UTCEPSS rescore
2026-06-13 22:59 UTCEPSS rescore
2026-06-12 23:10 UTCEPSS rescore
2026-06-11 13:59 UTCEPSS rescore
2026-06-11 13:58 UTCEPSS rescore
2026-06-10 22:17 UTCEPSS rescore
2026-06-10 13:21 UTCEPSS rescore

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2026-06-10 13:21 UTCEPSS rescore
2026-06-10 06:17 UTCOSV refresh
2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:43 UTCEPSS rescore
2026-05-29 13:43 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore
2026-05-27 13:39 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 07:17 UTCEPSS rescore
2026-05-26 07:17 UTCEPSS rescore
2026-05-25 00:06 UTCEG score recompute
2026-05-25 00:06 UTCVendor advisory
2026-05-25 00:06 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-1945?

CVE-2023-1945 is a medium vulnerability published on June 2, 2023. Unexpected data returned from the Safe Browsing API could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 102.10 and Firefox ESR < 102.10.

When was CVE-2023-1945 disclosed?

CVE-2023-1945 was first published in the National Vulnerability Database on June 2, 2023, with the most recent update on January 9, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-1945 actively exploited?

CVE-2023-1945 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 46.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-1945?

CVE-2023-1945 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2023-1945?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-1945, 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.

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