Medium 6.5Published Jun 2, 2023

CVE-2023-25752When accessing throttled streams, the count of available bytes needed to be checked in the calling function to be within bounds.

Updated under an hour ago (Oct 26, 2026, 1:10 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

When accessing throttled streams, the count of available bytes needed to be checked in the calling function to be within bounds. This may have lead future code to be incorrect and vulnerable. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.

CVSS: 6.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Oct 24, 2026
First seen by InfoSec Signals: Oct 24, 2026

Affected products

Affected products

mozilla firefox mozilla:firefox	before 111.0	NVD
mozilla firefox_esr mozilla:firefox_esr	before 102.9	NVD
mozilla thunderbird mozilla:thunderbird	before 102.9	NVD

References

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1811627	issue-tracking, permissions-required, vendor-advisory
https://www.mozilla.org/security/advisories/mfsa2023-09/	vendor-advisory
https://www.mozilla.org/security/advisories/mfsa2023-10/	vendor-advisory
https://www.mozilla.org/security/advisories/mfsa2023-11/	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.