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NVD / CVE Program· CNA mozilla

CVE-2016-9902: The Pocket toolbar button, once activated, listens for events fired from it's own pages but does not verify the origin of incoming events.

HighCVSS 7.5 · v3.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.2% (FIRST EPSS); higher than 70.7% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: firefox-esr (Alpine:v3.4) 45.6.0; firefox-esr (Debian:12) 45.6.0esr-1; firefox-esr (Debian:7) 45.6.0esr-1~deb7u1.

Low priority for now. Upgrade to firefox-esr (Alpine:v3.4) 45.6.0; firefox-esr (Debian:12) 45.6.0esr-1; firefox-esr (Debian:7) 45.6.0esr-1~deb7u1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The Pocket toolbar button, once activated, listens for events fired from it's own pages but does not verify the origin of incoming events. This allows content from other origins to fire events and inject content and commands into the Pocket context. Note: this issue does not affect users with e10s enabled. This vulnerability affects Firefox ESR < 45.6 and Firefox < 50.1.

Published
Jun 11, 2018
Updated
Jun 16, 2026
EPSS
1.2% · 70th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when exploit code appears or is weaponized
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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
redhatenterprise linux desktop
redhatenterprise linux server
redhatenterprise linux server aus
redhatenterprise linux server eus
redhatenterprise linux workstation
mozillafirefox

Versions reported by the vendor

Affected version ranges reported by the assigning authority (mozilla). Independent of NVD's CPE analysis and usually ahead of it.

  • Mozilla Firefox

    • unspecified and later · before 50.1affected

  • Mozilla Firefox ESR

    • unspecified and later · before 45.6affected
Affected versions · NVD (16)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • mozilla firefoxbefore 45.6.0
  • mozilla firefoxbefore 50.1
  • redhat enterprise linux desktop5.0
  • redhat enterprise linux desktop6.0
  • redhat enterprise linux desktop7.0
  • redhat enterprise linux server5.0
  • redhat enterprise linux server6.0
  • redhat enterprise linux server7.0
  • redhat enterprise linux server aus7.3
  • redhat enterprise linux server aus7.4
  • redhat enterprise linux server eus7.3
  • redhat enterprise linux server eus7.4
  • redhat enterprise linux server eus7.5
  • redhat enterprise linux workstation5.0
  • redhat enterprise linux workstation6.0
  • redhat enterprise linux workstation7.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.4firefox-esrbefore 45.6.045.6.0
Debian:12firefox-esrbefore 45.6.0esr-145.6.0esr-1
Debian:7firefox-esrbefore 45.6.0esr-1~deb7u145.6.0esr-1~deb7u1
Debian:8firefox-esrbefore 45.6.0esr-1~deb8u145.6.0esr-1~deb8u1
Red Hat:enterprise_linux:5::clientfirefoxbefore 0:45.6.0-1.el5_110:45.6.0-1.el5_11
Red Hat:enterprise_linux:5::clientfirefox-debuginfobefore 0:45.6.0-1.el5_110:45.6.0-1.el5_11
Red Hat:enterprise_linux:5::clientthunderbirdbefore 0:45.6.0-1.el5_110:45.6.0-1.el5_11
Red Hat:enterprise_linux:5::clientthunderbird-debuginfobefore 0:45.6.0-1.el5_110:45.6.0-1.el5_11
Red Hat:enterprise_linux:6::clientfirefoxbefore 0:45.6.0-1.el6_80:45.6.0-1.el6_8
Red Hat:enterprise_linux:6::clientfirefox-debuginfobefore 0:45.6.0-1.el6_80:45.6.0-1.el6_8
Red Hat:enterprise_linux:6::clientthunderbirdbefore 0:45.6.0-1.el6_80:45.6.0-1.el6_8
Red Hat:enterprise_linux:6::clientthunderbird-debuginfobefore 0:45.6.0-1.el6_80:45.6.0-1.el6_8
Red Hat:enterprise_linux:7::clientfirefoxbefore 0:45.6.0-1.el7_30:45.6.0-1.el7_3
Red Hat:enterprise_linux:7::clientfirefox-debuginfobefore 0:45.6.0-1.el7_30:45.6.0-1.el7_3
Red Hat:enterprise_linux:7::clientthunderbirdbefore 0:45.6.0-1.el7_30:45.6.0-1.el7_3
Red Hat:enterprise_linux:7::clientthunderbird-debuginfobefore 0:45.6.0-1.el7_30:45.6.0-1.el7_3
SUSE:Linux Enterprise Desktop 12 SP1MozillaFirefoxbefore 45.6.0esr-96.145.6.0esr-96.1
SUSE:Linux Enterprise Server 11 SP2-LTSSMozillaFirefoxbefore 45.6.0esr-66.145.6.0esr-66.1
SUSE:Linux Enterprise Software Development Kit 11 SP4MozillaFirefoxbefore 45.6.0esr-62.145.6.0esr-62.1

Same product

redhat: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-5375JIT code allocation can allow for a bypass of ASLR and DEP protections leading to potential memory corruption attacks.
    49Plan
  • CVE-2018-14649It was found that ceph-isci-cli package as shipped by Red Hat Ceph Storage 2 and 3 is using python-werkzeug in debug shell mode.
    43Plan
  • CVE-2016-7050SerializableProvider in RESTEasy in Red Hat Enterprise Linux Desktop 7, Red Hat Enterprise Linux HPC Node 7, Red Hat Enterprise Linux…
    41Plan

Published before and after this one in the same product

  • ← EarlierCVE-2016-5416Jun 8, 2017 · 389 Directory Server in Red Hat Enterprise Linux Desktop 6 through 7, Red Hat Enterprise Linux HPC Node 6 through 7, Red Hat Enterprise…
    31Monitor
  • ← EarlierCVE-2015-3149Jul 25, 2017 · The Hotspot component in OpenJDK8 as packaged in Red Hat Enterprise Linux 6 and 7 allows local users to write to arbitrary files via a…
    22Monitor
  • Later →CVE-2016-9904Jun 11, 2018 · An attacker could use a JavaScript Map/Set timing attack to determine whether an atom is used by another compartment/zone in specific…
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:firefox-esr45.6.0 · Alpine:v3.4Package registry (OSV)
debian:firefox-esr45.6.0esr-1 · Debian:12Package registry (OSV)
red hat:firefox0:45.6.0-1.el5_11 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:firefox-debuginfo0:45.6.0-1.el5_11 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:thunderbird0:45.6.0-1.el5_11 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:thunderbird-debuginfo0:45.6.0-1.el5_11 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
suse:MozillaFirefox45.6.0esr-62.1 · SUSE:Linux Enterprise Software Development Kit 11 SP4Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-346 · Origin Validation Error

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records