CVE-2024-38270 json
An insufficient entropy vulnerability caused by the improper use of a randomness function with low entropy for web authentication tokens ge…
published 2024-09-10 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-37235
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
An insufficient entropy vulnerability caused by the improper use of a randomness function with low entropy for web authentication tokens generation exists in the Zyxel GS1900-10HP firmware version V2.80(AAZI.0)C0. This vulnerability could allow a LAN-based attacker a slight chance to gain a valid session token if multiple authenticated sessions are alive.
Patch / fix
- zyxel gs1900-48hpv2_firmware 2.80\(abtq.1\)c0
- zyxel gs1900-48_firmware 2.80\(aahn.1\)c0
- zyxel gs1900-24hpv2_firmware 2.80\(abtp.1\)c0
- zyxel gs1900-24ep_firmware 2.80\(abto.1\)c0
- zyxel gs1900-16_firmware 2.80\(aahj.1\)c0
- zyxel gs1900-10hp_firmware 2.80\(aazi.1\)c0
- zyxel gs1900-8hp_firmware 2.80\(aahi.1\)c0
- zyxel gs1900-8_firmware 2.80\(aahh.1\)c0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected products
- Zyxel GS1900-10HP firmware
Classification
- Weakness
-
- CWE-331 Insufficient Entropy
References
Sources
- CVE List CVE-2024-38270
- NVD CVE-2024-38270
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