Is CVE-2026-3805 actively exploited?

No active exploitation of CVE-2026-3805 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3805 be exploited remotely?

Yes. CVE-2026-3805 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3805?

CVE-2026-3805 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-3805

HIGH

CVE-2026-3805

Published: March 11, 2026· Updated: Mar 12, 2026

7.5

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.4th

Official Description

When doing a second SMB request to the same host again, curl would wrongly use

a data pointer pointing into already freed memory.

NVD Source

Technical Analysis

CVE-2026-3805 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

haxx1 product

curl

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Exploit-DB

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

PacketStorm

Security advisories & exploits

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://curl.se/docs/CVE-2026-3805.html

ADVISORYhttps://curl.se/docs/CVE-2026-3805.json

ADVISORYhttps://hackerone.com/reports/3591944

ADVISORYhttp://www.openwall.com/lists/oss-security/2026/03/11/4

News & Research Mentioning CVE-2026-3805

ST Engineering iDirect iQ-Series Terminals

CISA Alerts· Jul 2, 2026

View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to gain unauthorized access to device information or cause a denial-of-service condition. The following versions of ST Engineering iDirect iQ-Series Terminals are affected: Evolution iQ‑Series terminals <=4.5.2.1 (CVE-2026-38059, CVE-2026-38057) 3315‑Series terminals <=4.5.2.1 (CVE-2026-38059, CVE-2026-38057) 9‑Series terminals <=4.5.2.1 (CVE-2026-38059, CVE-2026-38057) CVSS Vendor Equipment Vulnerabilities v3 8.1 ST Engineering iDirect ST Engineering iDirect iQ-Series Terminals Missing Authentication for Critical Function, Cross-Site Request Forgery (CSRF) Background Critical Infrastructure Sectors: Communications, Defense Industrial Base, Energy, Government S [xlite_meta score:79 src:CISA Alerts xlite_fp:888eca37855ffe022c9a4b4c8cb1f6549a28e331b3abf0c5fb8792044e6e894f]