How severe is CVE-2019-5986?

CVE-2019-5986 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-5986 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-5986?

CVE-2019-5986 primarily affects Ntt-east Pr-s300ne Firmware. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-5986?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-5986 published?

CVE-2019-5986 was published on 2019-09-12 and last updated on 2026-06-17.

CVE-2019-5986

CVE-2019-5986 is a high-severity vulnerability in Ntt-east Pr-s300ne Firmware with a CVSS 3.x base score of 8.8. 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Ntt-east Pr-s300ne Firmware
Published: 2019-09-12
Last modified: 2026-06-17

Description

Cross-site request forgery (CSRF) vulnerability in Hikari Denwa router/Home GateWay (Hikari Denwa router/Home GateWay provided by NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION PR-S300NE/RT-S300NE/RV-S340NE firmware version Ver. 19.41 and earlier, PR-S300HI/RT-S300HI/RV-S340HI firmware version Ver.19.01.0005 and earlier, PR-S300SE/RT-S300SE/RV-S340SE firmware version Ver.19.40 and earlier, PR-400NE/RT-400NE/RV-440NE firmware version Ver.7.42 and earlier, PR-400KI/RT-400KI/RV-440KI firmware version Ver.07.00.1010 and earlier, PR-400MI/RT-400MI/RV-440MI firmware version Ver. 07.00.1012 and earlier, PR-500KI/RT-500KI firmware version Ver.01.00.0090 and earlier, RS-500KI firmware version Ver.01.00.0070 and earlier, PR-500MI/RT-500MI firmware version Ver.01.01.0014 and earlier, and RS-500MI firmware version Ver.03.01.0019 and earlier, and Hikari Denwa router/Home GateWay provided by NIPPON TELEGRAPH AND TELEPHONE WEST CORPORATION PR-S300NE/RT-S300NE/RV-S340NE firmware version Ver. 19.41 and earlier, PR-S300HI/RT-S300HI/RV-S340HI firmware version Ver.19.01.0005 and earlier, PR-S300SE/RT-S300SE/RV-S340SE firmware version Ver.19.40 and earlier, PR-400NE/RT-400NE/RV-440NE firmware version Ver.7.42 and earlier, PR-400KI/RT-400KI/RV-440KI firmware version Ver.07.00.1010 and earlier, PR-400MI/RT-400MI/RV-440MI firmware version Ver. 07.00.1012 and earlier, PR-500KI/RT-500KI firmware version Ver.01.00.0090 and earlier, and PR-500MI/RT-500MI firmware version Ver.01.01.0011 and earlier) allow remote attackers to hijack the authentication of administrators via unspecified vectors.

Frequently asked questions

What is CVE-2019-5986?: Cross-site request forgery (CSRF) vulnerability in Hikari Denwa router/Home GateWay (Hikari Denwa router/Home GateWay provided by NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION PR-S300NE/RT-S300NE/RV-S340NE firmware version Ver. 19.41 and earlier, PR-S300HI/RT-S300HI/RV-S340HI firmware version Ver.19.01.0005 and earlier, PR-S300SE/RT-S300SE/RV-S340SE firmware version Ver.19.40 and earlier, PR-400NE/RT-400NE/RV-440NE firmware version Ver.7.42 and earlier, PR-400KI/RT-400KI/RV-440KI firmware version Ver.07.00.1010 and earlier, PR-400MI/RT-400MI/RV-440MI firmware version Ver. 07.00.1012 and earlier, PR-500KI/RT-500KI firmware version Ver.01.00.0090 and earlier, RS-500KI firmware version Ver.01.00.0070 and earlier, PR-500MI/RT-500MI firmware version Ver.01.01.0014 and earlier, and RS-500MI firmware version Ver.03.01.0019 and earlier, and Hikari Denwa router/Home GateWay provided by NIPPON TELEGRAPH AND TELEPHONE WEST CORPORATION PR-S300NE/RT-S300NE/RV-S340NE firmware version Ver. 19.41 and earlier, PR-S300HI/RT-S300HI/RV-S340HI firmware version Ver.19.01.0005 and earlier, PR-S300SE/RT-S300SE/RV-S340SE firmware version Ver.19.40 and earlier, PR-400NE/RT-400NE/RV-440NE firmware version Ver.7.42 and earlier, PR-400KI/RT-400KI/RV-440KI firmware version Ver.07.00.1010 and earlier, PR-400MI/RT-400MI/RV-440MI firmware version Ver. 07.00.1012 and earlier, PR-500KI/RT-500KI firmware version Ver.01.00.0090 and earlier, and PR-500MI/RT-500MI firmware version Ver.01.01.0011 and earlier) allow remote attackers to hijack the authentication of administrators via unspecified vectors.
How severe is CVE-2019-5986?: CVE-2019-5986 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-5986 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-5986?: CVE-2019-5986 primarily affects Ntt-east Pr-s300ne Firmware. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-5986?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-5986 published?: CVE-2019-5986 was published on 2019-09-12 and last updated on 2026-06-17.

References

Affected products (46)

cpe:2.3:o:ntt-east:pr-s300ne_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rt-s300ne_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rv-s340ne_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:pr-s300hi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rt-s300hi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rv-s340hi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:pr-s300se_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rt-s300se_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rv-s340se_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:pr-400ne_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rt-400ne_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rv-440ne_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:pr-400ki_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rt-400ki_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rv-440ki_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:pr-400mi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rt-400mi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rv-440mi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:pr-500ki_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rt-500ki_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rs-500ki_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:pr-500mi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rt-500mi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-east:rs-500mi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:pr-s300ne_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:rt-s300ne_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:rv-s340ne_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:pr-s300hi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:rt-s300hi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:rv-s340hi_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:pr-s300se_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:rt-s300se_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:rv-s340se_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:pr-400ne_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:rt-400ne_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:rv-440ne_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:pr-400ki_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:rt-400ki_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:rv-440ki_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:ntt-west:pr-400mi_firmware:*:*:*:*:*:*:*:*

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