CVE-2015-5993 — Buffer overflow in form2ping.cgi on Philippine Long Distance Telephone (PLDT) SpeedSurf 504AN devices with firmware GAN9.8U26-4-TX-R6B018-PH.EN and Kasda KW58293 devices allows remote attackers to cause a denial of service (device outage) via a long ipaddr parameter

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HIGH

Buffer overflow in form2ping.cgi on Philippine Long Distance Telephone (PLDT) SpeedSurf 504AN devices with firmware GAN9.8U26-4-TX-R6B018-PH.EN and Kasda KW58293 devices allows remote attackers to cause a denial of service (device outage) via a long ipaddr parameter

Published Sep 21, 2015

7.8

HIGH

CVSS 2.0

EPSS 1.55%

Description

Buffer overflow in form2ping.cgi on Philippine Long Distance Telephone (PLDT) SpeedSurf 504AN devices with firmware GAN9.8U26-4-TX-R6B018-PH.EN and Kasda KW58293 devices allows remote attackers to cause a denial of service (device outage) via a long ipaddr parameter.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.55% 0.01553

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01553

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (12 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.55% (0.01553)	74.22th	v5 (v2026.06.15)
Jun 15, 2026	1.55% (0.01553)	71.83th	v5 (v2026.06.15)
Feb 12, 2026	1.83% (0.01834)	82.58th	v4 (v2025.03.14)
Mar 17, 2025	0.58% (0.00583)	67.11th	v4 (v2025.03.14)
Dec 12, 2024	0.41% (0.00415)	74.89th	v3 (v2023.03.01)
Feb 8, 2024	0.41% (0.00415)	73.38th	v3 (v2023.03.01)
Jul 14, 2023	0.41% (0.00415)	70.63th	v3 (v2023.03.01)
Mar 7, 2023	0.36% (0.00358)	67.69th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Sep 17, 2022	1.05% (0.01055)	50.47th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)

Weaknesses (1)

CWE-119

Buffer Overflow

References (1)

http://www.kb.cert.org/vuls/id/525276
third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource

Link	Providers	Tags
http://www.kb.cert.org/vuls/id/525276		third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner certcc

Published Sep 21, 2015

Updated Aug 6, 2024

Reserved Aug 14, 2015

Link CVE-2015-5993

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-5993

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-5993