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| Vulnerability ID | VCID-fgtn-fpku-wbbm |
| Aliases |
CVE-2025-4093
|
| Summary | Memory safety bug present in Firefox ESR 128.9, and Thunderbird 128.9. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. |
| Status | Published |
| Exploitability | None |
| Weighted Severity | None |
| Risk | None |
| Affected and Fixed Packages | Package Details |
| System | Score | Found at |
|---|---|---|
| cvssv3 | 8.8 | https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-4093.json |
| epss | 0.00367 | https://api.first.org/data/v1/epss?cve=CVE-2025-4093 |
| cvssv3.1 | 8.1 | https://bugzilla.mozilla.org/show_bug.cgi?id=1894100 |
| ssvc | Track | https://bugzilla.mozilla.org/show_bug.cgi?id=1894100 |
| cvssv3.1 | 8.8 | https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml |
| generic_textual | high | https://www.mozilla.org/en-US/security/advisories/mfsa2025-29 |
| generic_textual | high | https://www.mozilla.org/en-US/security/advisories/mfsa2025-32 |
| cvssv3.1 | 8.1 | https://www.mozilla.org/security/advisories/mfsa2025-29/ |
| ssvc | Track | https://www.mozilla.org/security/advisories/mfsa2025-29/ |
| cvssv3.1 | 8.1 | https://www.mozilla.org/security/advisories/mfsa2025-32/ |
| ssvc | Track | https://www.mozilla.org/security/advisories/mfsa2025-32/ |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Percentile | 0.58887 |
| EPSS Score | 0.00367 |
| Published At | May 29, 2026, 12:55 p.m. |
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| 2026-05-29T08:26:09.590266+00:00 | Mozilla Importer | Import | https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2025/mfsa2025-29.yml | 38.6.0 |