MEDIUM
freeSSHd 1.2 and earlier allows remote attackers to cause a denial of service (crash) via a SSH2_MSG_NEWKEYS packet to TCP port 22, which triggers a NULL pointer dereference
Published Feb 21, 2008
5.0
MEDIUMCVSS 2.0
EPSS 6.23%
Description
freeSSHd 1.2 and earlier allows remote attackers to cause a denial of service (crash) via a SSH2_MSG_NEWKEYS packet to TCP port 22, which triggers a NULL pointer dereference.
Affected products
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.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
6.23% 0.06233
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.06233
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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 6.23% (0.06233) | 93.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.23% (0.06233) | 92.62th | v5 (v2026.06.15) |
| Jan 29, 2026 | 6.62% (0.06615) | 90.95th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.96% (0.04957) | 88.67th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.90% (0.06898) | 85.30th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.96% (0.04957) | 88.93th | v4 (v2025.03.14) |
| Dec 12, 2024 | 5.29% (0.05285) | 93.35th | v3 (v2023.03.01) |
| Feb 27, 2024 | 5.34% (0.05337) | 92.85th | v3 (v2023.03.01) |
| Dec 17, 2023 | 5.32% (0.05319) | 92.32th | v3 (v2023.03.01) |
| Apr 11, 2023 | 5.61% (0.05614) | 92.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 6.80% (0.06802) | 92.75th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.48% (0.04482) | 88.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.48% (0.04482) | 87.66th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.48% (0.04482) | 71.45th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (5)
- http://aluigi.altervista.org/adv/freesshdnull-adv.txt x_refsource_MISC
- http://secunia.com/advisories/29002 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.securityfocus.com/archive/1/488363/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/27845 vdb-entryx_refsource_BIDExploit
- http://www.vupen.com/english/advisories/2008/0591 vdb-entryx_refsource_VUPEN
| Link | Providers | Tags |
|---|---|---|
| http://aluigi.altervista.org/adv/freesshdnull-adv.txt | x_refsource_MISC | |
| http://secunia.com/advisories/29002 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.securityfocus.com/archive/1/488363/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/27845 | vdb-entryx_refsource_BIDExploit | |
| http://www.vupen.com/english/advisories/2008/0591 | vdb-entryx_refsource_VUPEN |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Feb 21, 2008
Updated Aug 7, 2024
Reserved Feb 20, 2008
Link CVE-2008-0852
CISA Vulnrichment
Updated n/a