How severe is CVE-2016-4839?

CVE-2016-4839 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2016-4839 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4839?

CVE-2016-4839 primarily affects Moneyforward Money Forward For Apppass. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-4839?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-4839 published?

CVE-2016-4839 was published on 2017-05-12 and last updated on 2026-06-17.

CVE-2016-4839

CVE-2016-4839 is a medium-severity vulnerability in Moneyforward Money Forward For Apppass with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Moneyforward Money Forward For Apppass
Published: 2017-05-12
Last modified: 2026-06-17

Description

The Android Apps Money Forward (prior to v7.18.0), Money Forward for The Gunma Bank (prior to v1.2.0), Money Forward for SHIGA BANK (prior to v1.2.0), Money Forward for SHIZUOKA BANK (prior to v1.4.0), Money Forward for SBI Sumishin Net Bank (prior to v1.6.0), Money Forward for Tokai Tokyo Securities (prior to v1.4.0), Money Forward for THE TOHO BANK (prior to v1.3.0), Money Forward for YMFG (prior to v1.5.0) provided by Money Forward, Inc. and Money Forward for AppPass (prior to v7.18.3), Money Forward for au SMARTPASS (prior to v7.18.0), Money Forward for Chou Houdai (prior to v7.18.3) provided by SOURCENEXT CORPORATION do not properly implement the WebView class, which allows an attacker to disclose information stored on the device via a specially crafted application.

Frequently asked questions

What is CVE-2016-4839?: The Android Apps Money Forward (prior to v7.18.0), Money Forward for The Gunma Bank (prior to v1.2.0), Money Forward for SHIGA BANK (prior to v1.2.0), Money Forward for SHIZUOKA BANK (prior to v1.4.0), Money Forward for SBI Sumishin Net Bank (prior to v1.6.0), Money Forward for Tokai Tokyo Securities (prior to v1.4.0), Money Forward for THE TOHO BANK (prior to v1.3.0), Money Forward for YMFG (prior to v1.5.0) provided by Money Forward, Inc. and Money Forward for AppPass (prior to v7.18.3), Money Forward for au SMARTPASS (prior to v7.18.0), Money Forward for Chou Houdai (prior to v7.18.3) provided by SOURCENEXT CORPORATION do not properly implement the WebView class, which allows an attacker to disclose information stored on the device via a specially crafted application.
How severe is CVE-2016-4839?: CVE-2016-4839 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2016-4839 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4839?: CVE-2016-4839 primarily affects Moneyforward Money Forward For Apppass. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-4839?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-4839 published?: CVE-2016-4839 was published on 2017-05-12 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:a:moneyforward:money_forward_for_apppass:*:*:*:*:*:android:*:*
cpe:2.3:a:moneyforward:money_forward_for_au_smartpass:*:*:*:*:*:android:*:*
cpe:2.3:a:moneyforward:money_forward_for_chou_houdai:*:*:*:*:*:android:*:*
cpe:2.3:a:moneyforward:money_forward_for_sbi_sumishin_net_bank:*:*:*:*:*:android:*:*
cpe:2.3:a:moneyforward:money_forward_for_shiga_bank:*:*:*:*:*:android:*:*
cpe:2.3:a:moneyforward:money_forward_for_shizuoka_bank:*:*:*:*:*:android:*:*
cpe:2.3:a:moneyforward:money_forward_for_the_gunma_bank:*:*:*:*:*:android:*:*
cpe:2.3:a:moneyforward:money_forward_for_the_toho_bank:*:*:*:*:*:android:*:*
cpe:2.3:a:moneyforward:money_forward_for_tokai_tokyo_securities:*:*:*:*:*:android:*:*
cpe:2.3:a:moneyforward:money_forward_for_ymfg:*:*:*:*:*:android:*:*

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