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CERTFR-2026-AVI-0404
Vulnerability from certfr_avis - Published: 2026-04-08 - Updated: 2026-04-08
De multiples vulnérabilités ont été découvertes dans les produits Mozilla. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance et un problème de sécurité non spécifié par l'éditeur.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Mozilla | Firefox ESR | Firefox ESR versions antérieures à 140.9.1 | ||
| Mozilla | Thunderbird ESR | Thunderbird ESR versions antérieures à 140.9.1 | ||
| Mozilla | Firefox | Firefox versions antérieures à 149.0.2 | ||
| Mozilla | Thunderbird | Thunderbird versions antérieures à 149.0.2 | ||
| Mozilla | Firefox ESR | Firefox ESR versions antérieures à 115.34.1 |
References
| Title | Publication Time | Tags | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Firefox ESR versions ant\u00e9rieures \u00e0 140.9.1",
"product": {
"name": "Firefox ESR",
"vendor": {
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"scada": false
}
}
},
{
"description": "Thunderbird ESR versions ant\u00e9rieures \u00e0 140.9.1",
"product": {
"name": "Thunderbird ESR",
"vendor": {
"name": "Mozilla",
"scada": false
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}
},
{
"description": "Firefox versions ant\u00e9rieures \u00e0 149.0.2",
"product": {
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"scada": false
}
}
},
{
"description": "Thunderbird versions ant\u00e9rieures \u00e0 149.0.2",
"product": {
"name": "Thunderbird",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
},
{
"description": "Firefox ESR versions ant\u00e9rieures \u00e0 115.34.1",
"product": {
"name": "Firefox ESR",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-5731",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-5731"
},
{
"name": "CVE-2026-5733",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-5733"
},
{
"name": "CVE-2026-5732",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-5732"
},
{
"name": "CVE-2026-5734",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-5734"
},
{
"name": "CVE-2026-5735",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-5735"
}
],
"initial_release_date": "2026-04-08T00:00:00",
"last_revision_date": "2026-04-08T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0404",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-04-08T00:00:00.000000"
}
],
"risks": [
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
},
{
"description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits Mozilla. Elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance et un probl\u00e8me de s\u00e9curit\u00e9 non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Mozilla",
"vendor_advisories": [
{
"published_at": "2026-04-07",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-26",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-26/"
},
{
"published_at": "2026-04-07",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-28",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-28/"
},
{
"published_at": "2026-04-07",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-25",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-25/"
},
{
"published_at": "2026-04-07",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-29",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-29/"
},
{
"published_at": "2026-04-07",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-27",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-27/"
}
]
}
CVE-2026-5731 (GCVE-0-2026-5731)
Vulnerability from cvelistv5 – Published: 2026-04-07 12:43 – Updated: 2026-06-30 12:11
VLAI
EPSS
Title
Memory safety bugs fixed in Firefox ESR 115.34.1, Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2
Summary
Memory safety bugs present in Firefox ESR 115.34.0, Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 149.0.2, Firefox ESR 115.34.1, Firefox ESR 140.9.1, Thunderbird 149.0.2, and Thunderbird 140.9.1.
Severity
9.8 (Critical)
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
33 references
Impacted products
22 products
Credits
Brian Grinstead, Christian Holler, Tom Schuster and the Mozilla Fuzzing Team
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CVE-2026-5732 (GCVE-0-2026-5732)
Vulnerability from cvelistv5 – Published: 2026-04-07 12:43 – Updated: 2026-06-30 03:18
VLAI
EPSS
Title
Incorrect boundary conditions, integer overflow in the Graphics: Text component
Summary
Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability was fixed in Firefox 149.0.2, Firefox ESR 140.9.1, Thunderbird 149.0.2, and Thunderbird 140.9.1.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
32 references
Impacted products
22 products
Credits
Sajeeb Lohani
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CVE-2026-5733 (GCVE-0-2026-5733)
Vulnerability from cvelistv5 – Published: 2026-04-07 12:43 – Updated: 2026-06-30 03:18
VLAI
EPSS
Title
Incorrect boundary conditions in the Graphics: WebGPU component
Summary
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 149.0.2 and Thunderbird 149.0.2.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2022554 | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://access.redhat.com/security/cve/CVE-2026-5733 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2455902 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
149.0.2 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
149.0.2 , ≤ *
(rpm)
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Credits
Inseo An
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CVE-2026-5734 (GCVE-0-2026-5734)
Vulnerability from cvelistv5 – Published: 2026-04-07 12:43 – Updated: 2026-06-30 12:11
VLAI
EPSS
Title
Memory safety bugs fixed in Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2
Summary
Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 149.0.2, Firefox ESR 140.9.1, Thunderbird 149.0.2, and Thunderbird 140.9.1.
Severity
8.1 (High)
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
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References
32 references
Impacted products
22 products
Credits
Brian Grinstead, Christian Holler, Tom Schuster and the Mozilla Fuzzing Team
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CVE-2026-5735 (GCVE-0-2026-5735)
Vulnerability from cvelistv5 – Published: 2026-04-07 12:43 – Updated: 2026-06-30 12:11
VLAI
EPSS
Title
Memory safety bugs fixed in Firefox 149.0.2 and Thunderbird 149.0.2
Summary
Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 149.0.2 and Thunderbird 149.0.2.
Severity
8.1 (High)
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://bugzilla.mozilla.org/buglist.cgi?bug_id=2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://www.mozilla.org/security/advisories/mfsa2… | |
| https://access.redhat.com/security/cve/CVE-2026-5735 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2455904 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
149.0.2 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
149.0.2 , ≤ *
(rpm)
|
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6 |
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Credits
Brian Grinstead, Christian Holler and the Mozilla Fuzzing Team
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Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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