In certain Yealink products before 2026-04-15, when the Wi-Fi AP function is enabled, a default 8-digit numeric PSK with insufficient…
Yealink devices with the Wi-Fi AP function enabled and the default 8-digit numeric PSK are exposed, including AVHub and UVC86. Fixed in the listed firmware versions.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 153.135.0.76, 151.435.0.66, 321.435.0.86, 319.410.0.66, 328.321.0.40, and 3 more
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 153.135.0.76, 151.435.0.66, 321.435.0.86, 319.410.0.66, 328.321.0.40, or one of 3 more.
- Exploitation0/40No signal
- Exposure?/25Exposure: unknown (data gap). Advisories don't say whether default setups are affected
- Reach?/20Reach: unknown (data gap). No tracked technology or package matched
- Severity7.4/10CVSS 7.4
- No patch0/5No signal
What would change the score
- Would score about 62 if added to CISA KEV
- Would score about 57 if CISA's SSVC rates exploitation active
- Would score about 29 if advisories confirm default setups are exposed
CVE-2026-122118 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.4 (high) and affects AVHub, UVC86, SmartVision 80 and 5 more; fixed in 153.135.0.76, 151.435.0.66, 321.435.0.86 and 5 more.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 7/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Unclear
- Fix
- Fixed in 153.135.0.76, 151.435.0.66, 321.435.0.86, 319.410.0.66, 328.321.0.40, and 3 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In certain Yealink products, the Wi-Fi access point function ships with a default 8-digit numeric pre-shared key that is too weak. A nearby attacker without logging in and without any user action can brute-force that key to join the network and intercept Wi-Fi traffic, and this only applies when the Wi-Fi AP function is enabled.
Read the original description
In certain Yealink products before 2026-04-15, when the Wi-Fi AP function is enabled, a default 8-digit numeric PSK with insufficient strength is used. Attackers can exploit this weakness via brute-force attacks to gain unauthorized network access and intercept Wi-Fi traffic.
What to do
Upgrade to a fixed version: 153.135.0.76, 151.435.0.66, 321.435.0.86, 319.410.0.66, 328.321.0.40, or one of 3 more.
Workaround: Manually change the WiFi AP password when enabling the AP function, using at least 8 characters with three character types and no three consecutive identical characters.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Yealink AVHub
fixed in 153.135.0.76
- Yealink UVC86
fixed in 151.435.0.66
- Yealink SmartVision 80
fixed in 321.435.0.86
- Yealink UVC40 E2
fixed in 319.410.0.66
- Yealink MeetingBorard C
fixed in 328.321.0.40
- Yealink MeetingBar A10
fixed in 278.320.0.86
- Yealink MeetingBar A40
fixed in 289.320.0.81
- Yealink MeetingBar A50
fixed in 323.320.0.54
Evidence 1
- Link
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-122118
Is CVE-2026-122118 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What does this mean?
The default Wi-Fi AP password is only an 8-digit number, which is weak. Someone could guess it by brute force, which can lead to unauthorized network access and Wi-Fi data leakage.Source: yealink.com
Which versions are affected by CVE-2026-122118?
AVHub: before 153.135.0.76. UVC86: before 151.435.0.66. SmartVision 80: before 321.435.0.86. UVC40 E2: before 319.410.0.66. MeetingBorard C: before 328.321.0.40. 3 more packages are listed on the page.Source: cve.now feed data
Am I affected, and how do I check?
Affected firmware is anything before AVHub 153.135.0.76, UVC86 151.435.0.66, SmartVision 80 321.435.0.86, UVC40 E2 319.410.0.66, MeetingBorard C 328.321.0.40, MeetingBar A10 278.320.0.86, MeetingBar A40 289.320.0.81, or MeetingBar A50 323.320.0.54. The issue applies only when the Wi-Fi AP function is enabled, so check the firmware version and whether the AP function is turned on in the device's settings.Source: yealink.com
How do I fix CVE-2026-122118?
Upgrade to the fixed firmware version listed for your product. Until then, when enabling the AP function, manually set a password of at least 8 characters with three character types and no three consecutive identical characters.Source: yealink.com