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CVE-2023-27533: curl from 7.0.0 (inclusive), through 7.881 (inclusive); +12 more affected products
CVE-2023-27533. CVSS 3.1 base score 8.8 (HIGH, NVD). EPSS 0.01993 (percentile 0.80145), scored 13-Oct-2026.
Affected technology
curl · from 7.0.0 (inclusive), through 7.881 (inclusive)
haxx
fedora · 36
fedoraproject
active iq unified manager · Version not applicable in the source CPE
netapp
clustered data ontap · 9.0
netapp
h300s firmware · Version not applicable in the source CPE
netapp
h500s firmware · Version not applicable in the source CPE
netapp
h700s firmware · Version not applicable in the source CPE
netapp
h410s firmware · Version not applicable in the source CPE
netapp
universal forwarder · from 8.2.0 (inclusive), before 8.2.12 (exclusive)
splunk
universal forwarder · from 9.0.0 (inclusive), before 9.0.6 (exclusive)
splunk
universal forwarder · 9.1.0
splunk
https://github.com/curl/curl · Fixed in 8.0.0
Vendor not specified by the source
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens
Component: Not specified by the source
Attack conditions (NVD, CVSS 3.1): Network (remote) · No privileges required · User interaction required
Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
What an attacker can do
An attacker may pass on maliciously crafted user name and "telnet options" during server negotiation. NVD’s CVSS 3.1 assessment (base score 8.8/10) rates confidentiality, integrity and availability impact as high. Source advisory’s CVSS 3.1 assessment (base score 9.8/10) rates confidentiality, integrity and availability impact as high.
- CWE
- CWE-74, CWE-75
- CCR priority
- 35.7 /100 (P4)
- CVSS 3.1
- 8.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · NVD
- EPSS
- 0.01993 · percentile 0.80145 · 2026-10-13
- KEV
- no
Provenance
- GitHub Advisory Database · Source record · observed 2026-10-15 01:13:25.227066+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-15 01:07:31.726917+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2023-27533.html