CVE-2023-27533

HIGH
8.8
CVSS Score
Published: March 30, 2023 at 12:00 AM UTC
Updated: October 14, 2026 at 11:17 PM UTC
9 products affected across 4 vendorsFedoraActive IQ Unified ManagerH700S Firmware· also runs on 4 platforms

Using https://github.com/curl/curl by N/A?

Get instant alerts when new vulnerabilities affect https://github.com/curl/curl - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH8.8
Exploit prediction
EPSS 2%
SSVC
PoC

Description

A vulnerability in input validation exists in curl <8.0 during communication using the TELNET protocol may allow an attacker to pass on maliciously crafted user name and "telnet options" during server negotiation. The lack of proper input scrubbing allows an attacker to send content or perform option negotiation without the application's intent. This vulnerability could be exploited if an application allows user input, thereby enabling attackers to execute arbitrary code on the system.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

7.0.0 ≤ v ≤ 7.881
Vendor states this is fixed in 8.0.0 (unaffected)
All versions
netapp-h300s (same device)
All versions
netapp-h410s (same device)
All versions
netapp-h500s (same device)
All versions
netapp-h700s (same device)
8.2.0 ≤ v < 8.2.129.0.0 ≤ v < 9.0.69.1.0
Affected range stops below 8.2.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.6, so it looks safe — our inference, not a vendor statement

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-75CWE-74

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card