CVE-2023-4584

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.80% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 54.2% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2023-09-11 08:02Z2 YR AGO

Last updated

2025-12-18 15:23Z8 MO AGO

Reserved

2023-08-29

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-787Out-of-bounds WriteBase
• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base

Data version

5.2

Document digest

244e72eb4d9049e428d7f56d904696f20f1536774a936938b0fa5e6012660756

• bugzilla.mozilla.orgMemory safety bugs fixed in Firefox 117, Firefox ESR 102.15, Firefox ESR 115.2, Thunderbird 102.15, and Thunderbird 115.2https://bugzilla.mozilla.org/buglist.cgi?bug_id=1843968%2C1845205%2C1846080%2C1846526%2C1847529
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-34/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-35/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-36/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-37/
• www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-38/