CVE-2023-49105

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2026-08-27. Federal remediation due 2026-08-30.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

11.07% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 95.5% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-08-27.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2023-11-21 00:00Z2 YR AGO

Last updated

2026-08-27 19:58Z8 HR AGO

Reserved

2023-11-21

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-287Improper AuthenticationClass

Data version

5.2

Document digest

02ab2baee47e4f86e428af7db931743a0b1b92aa010bed673811ae7d95cba67b

• owncloud.orghttps://owncloud.org/security
• owncloud.comhttps://owncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/
• hunt.iohttps://hunt.io/blog/chinese-speaking-operator-philippine-nuclear-naval-contractorthird-party-advisory
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-49105government-resource