CVE-2026-2759Disclosure(mozilla / firefox)

LOWCVSS 9.8 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

mozilla CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

Other references

Weakness type (CWE)

CWE-1384

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

firefox
thunderbird

Threat summary

5 mentions across 3 observed days
Momentum state: stable

What's happening

Technical details provided in 4 signals
Disclosure: 4 classified signals
General: 1 classified signal
Peaked 1d ago at 3 mentions (2026-02-28); latest day: 1
5 total mentions across 3 days

Affected systems

Vendors

mozilla

Products

firefoxthunderbird

Deep dive

Activity timeline5 mentions / 3d

Signal classification2 categories

Disclosure

480.0%

General

120.0%

Referenced assets4 URLs

By indicator

Classification over time

Date	Total	Labels

2026-02-27	1	General1
2026-02-28	3	Disclosure3
2026-03-01	1	Disclosure1

Full discourse5 posts

CERT-PY@CERTpy223d
General
⚠️ Vulnerabilidades en productos Mozilla ❗ CVE-2026-2759 ❗ CVE-2026-2758 ❗ CVE-2026-2757 ➡️ Más info: https://www.cert.gov.py/vulnerabilidades-en-productos-mozilla-8/ https://t.co/7PsTRT1nPC
Post summary
The tweet lists three Mozilla product CVEs and links to a site for more information, but offers no further technical or exploit details.
00001106
6.6K followersView on X
CRAC Learning - Tech@cracbot221d
Disclosure
CVE-2026-2759 (CVSS:9.8, CRITICAL) is Modified. Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR..https://nvd.nist.gov/vuln/detail/CVE-2026-2759 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
The post announces CVE-2026-2759, a critical boundary‑condition flaw in Firefox’s ImageLib component (CVSS 9.8), affecting versions below 148 and ESR, but offers no PoC, exploit, or patch details.
0000026
173 followersView on X
Infoflowcloud@infoflowcloud222d
Disclosure
🚨*CVE* CVE-2026-2759 Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. https://www.cve.org/CVERecord?id=CVE-2026-2759 ----- Traducción: CVE-2026-2759 Condiciones de lím… http://infoflow.cloud`
Post summary
The post announces CVE-2026-2759, noting affected Firefox versions and a boundary‑condition flaw in the ImageLib component, but offers no PoC, exploit, or mitigation details.
0000042
55 followersView on X
CVE@CVEnew222d
Disclosure
CVE-2026-2759 Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. https://www.cve.org/CVERecord?id=CVE-2026-2759
Post summary
The text announces CVE-2026-2759, a boundary condition flaw in Firefox's ImageLib component affecting specific Firefox and ESR versions.
00000624
56.6K followersView on X
CRAC Learning - Tech@cracbot222d
Disclosure
CVE-2026-2759 (CVSS:9.8, CRITICAL) is Modified. Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR..https://nvd.nist.gov/vuln/detail/CVE-2026-2759 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
CVE-2026-2759 is a newly disclosed critical flaw in Firefox's Graphics ImageLib component involving incorrect boundary conditions, with no information on PoCs, exploitation, patches, or active attacks.
0000034
173 followersView on X

CPE platform detail4 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

4 of 4 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	mozilla	firefox	-	-	-
App	mozilla	firefox	-	-	-
App	mozilla	thunderbird	-	-	-
App	mozilla	thunderbird	-	-	-

Explore more

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What researchers are saying

CVE-2026-2759

CERT-PY@CERTpyGeneral

The tweet lists three Mozilla product CVEs and links to a site for more information, but offers no further technical or exploit details.

CRAC Learning - Tech@cracbotDisclosure

The post announces CVE-2026-2759, a critical boundary‑condition flaw in Firefox’s ImageLib component (CVSS 9.8), affecting versions below 148 and ESR, but offers no PoC, exploit, or patch details.

Infoflowcloud@infoflowcloudDisclosure

The post announces CVE-2026-2759, noting affected Firefox versions and a boundary‑condition flaw in the ImageLib component, but offers no PoC, exploit, or mitigation details.

CVE@CVEnewDisclosure

The text announces CVE-2026-2759, a boundary condition flaw in Firefox's ImageLib component affecting specific Firefox and ESR versions.

CRAC Learning - Tech@cracbotDisclosure

CVE-2026-2759 is a newly disclosed critical flaw in Firefox's Graphics ImageLib component involving incorrect boundary conditions, with no information on PoCs, exploitation, patches, or active attacks.