CVE-2023-28997

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• 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

1.07% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 64.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

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

2023-04-04 12:42Z3 YR AGO

Last updated

2025-11-03 18:08Z11 MO AGO

Reserved

2023-03-29

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 6.7)

CNA CVSS vector

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

Weaknesses

• CWE-323Reusing a Nonce, Key Pair in EncryptionBase

Data version

5.2

Document digest

f2eaf71ee28a246b7ed5a3cc51793bf995b3025f5e2fb409bb581a652fc21526

• github.comhttps://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fcx_refsource_CONFIRM
• github.comhttps://github.com/nextcloud/desktop/pull/5324x_refsource_MISC
• ethz.chhttps://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdfx_refsource_MISC
• lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/09/msg00018.html