HIGH
Zhone GPON 2520 with firmware R4.0.2.566b allows remote attackers to cause a denial of service via a long string in the oldpassword parameter
Published Feb 23, 2015
7.8
HIGHCVSS 2.0
EPSS 3.03%
Description
Zhone GPON 2520 with firmware R4.0.2.566b allows remote attackers to cause a denial of service via a long string in the oldpassword parameter.
Affected products
No data.
AND
- r4.0.2.566b
Running on/with
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
7.8 HIGH NVD
AV:N/AC:L/Au:N/C:N/I:N/A:C
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.03% 0.03034
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03034
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 (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.03% (0.03034) | 87.04th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.03% (0.03034) | 85.73th | v5 (v2026.06.15) |
| Aug 21, 2025 | 20.91% (0.20905) | 95.40th | v4 (v2025.03.14) |
| Mar 30, 2025 | 10.21% (0.10211) | 92.40th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.84% (0.07841) | 86.39th | v4 (v2025.03.14) |
| Mar 17, 2025 | 10.21% (0.10211) | 92.56th | v4 (v2025.03.14) |
| Jan 5, 2025 | 28.29% (0.28289) | 96.85th | v3 (v2023.03.01) |
| Dec 17, 2024 | 30.10% (0.30097) | 96.93th | v3 (v2023.03.01) |
| Aug 19, 2024 | 22.61% (0.22611) | 96.60th | v3 (v2023.03.01) |
| Sep 18, 2023 | 28.88% (0.28876) | 96.30th | v3 (v2023.03.01) |
| May 26, 2023 | 22.61% (0.22611) | 95.80th | v3 (v2023.03.01) |
| Apr 23, 2023 | 11.29% (0.11288) | 94.31th | v3 (v2023.03.01) |
| Mar 7, 2023 | 8.24% (0.08237) | 93.31th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.58% (0.07584) | 92.90th | v2 (v2022.01.01) |
| Jul 15, 2022 | 7.58% (0.07584) | 92.52th | v2 (v2022.01.01) |
| Apr 1, 2022 | 8.38% (0.08382) | 93.35th | v2 (v2022.01.01) |
| Feb 4, 2022 | 8.38% (0.08382) | 82.62th | v2 (v2022.01.01) |
Weaknesses (1)
References (2)
- http://www.exploit-db.com/exploits/35859 exploitx_refsource_EXPLOIT-DB
- http://www.securityfocus.com/bid/74876 vdb-entryx_refsource_BID
| Link | Providers | Tags |
|---|---|---|
| http://www.exploit-db.com/exploits/35859 | exploitx_refsource_EXPLOIT-DB | |
| http://www.securityfocus.com/bid/74876 | vdb-entryx_refsource_BID |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Feb 23, 2015
Updated Aug 6, 2024
Reserved Feb 23, 2015
Link CVE-2015-2055
CISA Vulnrichment
Updated n/a