CVE-2016-9076: Mozilla Firefox vulnerability

CVE-2016-9076: An issue where a "<select>" dropdown menu can be used to cover location bar content, resulting in potential...

An issue where a "<select>" dropdown menu can be used to cover location bar content, resulting in potential spoofing attacks. This attack requires e10s to be enabled in order to function. This vulnerability affects Firefox < 50.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 02:42 UTC (UTC+00:00)

Security readout for executives and security teams

This Firefox flaw could let a web page visually cover part of the browser location bar using a dropdown, creating a phishing or spoofing risk. It affects Firefox versions before 50 and requires e10s to be enabled. Exposure is mainly legacy Firefox installations below version 50, especially unmanaged endpoints, kiosks, testing images, or embedded browser environments where e10s remains enabled. Treat this as a legacy browser hygiene issue. It is not presented as actively exploited, but it can support phishing where outdated Firefox remains in use. Mitigation focus: Upgrade Firefox to version 50 or later per Mozilla advisory scope.; Remove unsupported legacy Firefox builds from managed endpoints.; Check vendor guidance before using configuration changes as temporary controls..

Prepared: Jun 7, 2026, 06:44 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2016-9076 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup

Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jun 11, 2018, 21:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugzilla.mozilla.org/show_bug.cgi?id=1276976CVE reference · x_refsource_CONFIRM
https://www.mozilla.org/security/advisories/mfsa2016-89/CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

MozillaFirefoxunspecifiedListed

Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.