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CVE-2023-23119

21
FAUCET Score

CVE-2023-23119 describes a firmware modification vulnerability in Ubiquiti airFiber AF2X Radio firmware versions 3.2.2 and earlier. An attacker can exploit a weak cyclic redundancy check (CRC) integrity mechanism during firmware updates via a man-in-the-middle (MITM) attack to bypass checksum verification and inject malicious firmware. Rated 5.9 Medium, this vulnerability has a high impact on integrity but requires high attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.2.2CPE matchmatch criteria
cpe:2.3:o:ui:af-2x_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.27%
Probability of exploitation in next 30 days
EPSS Percentile
18.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0027 is in the 2nd percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

community.ui.com / tags/security/releases
Vendor Advisory
hackmd.io / %40slASVrz_SrW7NQCsunofeA/SkYce4f5o
ExploitThird Party Advisory