CVE-2015-1783

The prefix variable in the get_or_define_ns function in Lasso before commit...

7.5 HighFix available

The prefix variable in the get_or_define_ns function in Lasso before commit 6d854cef4211cdcdbc7446c978f23ab859847cdd allows remote attackers to cause a denial of service (uninitialized memory access and application crash) via unspecified vectors.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

3.45%Up 2.2 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2015-1783
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2015-1783
Updated: 2026-11-02

EUVDEUVD-2015-1910 No score

Record: EUVD-2015-1910
Updated: 2026-11-03

GitHub AdvisoriesGHSA-h78r-gxwp-4fvm 7.5

The prefix variable in the get_or_define_ns function in Lasso before commit...

Record: GHSA-h78r-gxwp-4fvm
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-119
Updated: 2026-11-02

OSV 7.5

Record: CVE-2015-1783
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2015-1783 7.5

Record: DEBIAN-CVE-2015-1783
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2015-1783 7.5

Record: UBUNTU-CVE-2015-1783
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`lasso` Debian:12	before 2.4.1-1	2.4.1-1
`lasso` Debian:13	before 2.4.1-1	2.4.1-1
`lasso` Debian:14	before 2.4.1-1	2.4.1-1

History

History
Recorded	Changed	Sources
Nov 3, 2026	affected
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2015-1783 is a high vulnerability (CVSS 7.5) in Entrouvert Lasso, published August 11, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.45%, the 89th percentile. Fixed in lasso 2.4.1-1.

References

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