HIGH
PgBouncer before 1.5.5 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by sending a password packet before a startup packet
Published May 23, 2017
7.5
HIGHCVSS 3.0
EPSS 4.13%
Description
PgBouncer before 1.5.5 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by sending a password packet before a startup packet.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
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.
4.13% 0.04130
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.04130
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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.13% (0.04130) | 90.50th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.13% (0.04130) | 89.48th | v5 (v2026.06.15) |
| Mar 30, 2025 | 3.38% (0.03375) | 86.22th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.81% (0.05811) | 83.77th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.38% (0.03375) | 86.53th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.14% (0.01143) | 85.40th | v3 (v2023.03.01) |
| Jun 4, 2024 | 1.01% (0.01011) | 83.71th | v3 (v2023.03.01) |
| Apr 19, 2024 | 0.86% (0.00861) | 82.10th | v3 (v2023.03.01) |
| Jul 18, 2023 | 0.86% (0.00861) | 80.09th | v3 (v2023.03.01) |
| May 8, 2023 | 0.77% (0.00766) | 78.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.84% (0.00841) | 79.51th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
Weaknesses (1)
References (7)
- http://www.openwall.com/lists/oss-security/2015/05/22/5 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/74751 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://github.com/pgbouncer/pgbouncer/commit/74d6e5f7de5ec736f71204b7b422af7380c19ac5 x_refsource_CONFIRMPatchThird Party Advisory
- https://github.com/pgbouncer/pgbouncer/commit/edab5be6665b9e8de66c25ba527509b229468573 x_refsource_CONFIRMPatchThird Party Advisory
- https://github.com/pgbouncer/pgbouncer/issues/42 x_refsource_CONFIRMExploitThird Party Advisory
- https://pgbouncer.github.io/changelog.html#pgbouncer-15x x_refsource_CONFIRMRelease NotesThird Party Advisory
- https://security.gentoo.org/glsa/201701-24 vendor-advisoryx_refsource_GENTOOThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2015/05/22/5 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.securityfocus.com/bid/74751 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://github.com/pgbouncer/pgbouncer/commit/74d6e5f7de5ec736f71204b7b422af7380c19ac5 | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://github.com/pgbouncer/pgbouncer/commit/edab5be6665b9e8de66c25ba527509b229468573 | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://github.com/pgbouncer/pgbouncer/issues/42 | x_refsource_CONFIRMExploitThird Party Advisory | |
| https://pgbouncer.github.io/changelog.html#pgbouncer-15x | x_refsource_CONFIRMRelease NotesThird Party Advisory | |
| https://security.gentoo.org/glsa/201701-24 | vendor-advisoryx_refsource_GENTOOThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner debian
Published May 23, 2017
Updated Aug 6, 2024
Reserved May 21, 2015
Link CVE-2015-4054
CISA Vulnrichment
Updated n/a