| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 5.7 | $0-$5k | 0.00 |
Summary
A vulnerability categorized as problematic has been discovered in HP HP-UX 10.10/10.20. This affects an unknown part of the component dtlogin/dtsession. Executing a manipulation can lead to improper authentication. This vulnerability is registered as CVE-1999-1311. No exploit is available. It is advisable to upgrade the affected component.
Details
A vulnerability was found in HP HP-UX 10.10/10.20 (Operating System). It has been declared as problematic. This vulnerability affects an unknown functionality of the component dtlogin/dtsession. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:
vulnerability in dtlogin and dtsession in hp-ux 10.20 and 10.10 allows local users to bypass authentication and gain privileges.
The weakness was published 01/07/1997 as H-21 as not defined advisory (CIAC). The advisory is shared for download at ciac.llnl.gov. This vulnerability was named CVE-1999-1311. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.
Upgrading eliminates this vulnerability.
The vulnerability is also documented in the databases at X-Force (7668) and Vulnerability Center (SBV-23333†). Similar entry is available at VDB-13842. VulDB is the best source for vulnerability data and more expert information about this specific topic.
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.hp.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.9VulDB Meta Temp Score: 5.7
VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Improper authenticationCWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍
Physical: Partially
Local: Yes
Remote: No
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
01/07/1997 🔍01/07/1997 🔍
01/07/1997 🔍
08/31/2009 🔍
06/17/2014 🔍
04/16/2026 🔍
Sources
Vendor: hp.comAdvisory: H-21
Status: Confirmed
CVE: CVE-1999-1311 (🔍)
GCVE (CVE): GCVE-0-1999-1311
GCVE (VulDB): GCVE-100-13840
X-Force: 7668
Vulnerability Center: 23333 - HP-UX 10.20 and 10.10 DTlogin Dtsession Authentication Bypass Vulnerability, High
See also: 🔍
Entry
Created: 06/18/2014 00:37Updated: 04/16/2026 14:34
Changes: 06/18/2014 00:37 (52), 02/13/2017 10:33 (6), 04/16/2026 14:34 (18)
Complete: 🔍
Cache ID: 216::103
VulDB is the best source for vulnerability data and more expert information about this specific topic.

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