CVE-2021-33514 json
Certain NETGEAR devices are affected by command injection by an unauthenticated attacker via the vulnerable /sqfs/lib/libsal.so.0.0 library…
published 2021-05-21 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-20206
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 7.9%
- EPSS 7.9% chance of exploitation in 30 days, percentile 94%
- public exploits
- 0
- none known
Summary
Certain NETGEAR devices are affected by command injection by an unauthenticated attacker via the vulnerable /sqfs/lib/libsal.so.0.0 library used by a CGI application, as demonstrated by setup.cgi?token=';$HTTP_USER_AGENT;' with an OS command in the User-Agent field. This affects GC108P before 1.0.7.3, GC108PP before 1.0.7.3, GS108Tv3 before 7.0.6.3, GS110TPPv1 before 7.0.6.3, GS110TPv3 before 7.0.6.3, GS110TUPv1 before 1.0.4.3, GS710TUPv1 before 1.0.4.3, GS716TP before 1.0.2.3, GS716TPP before 1.0.2.3, GS724TPPv1 before 2.0.4.3, GS724TPv2 before 2.0.4.3, GS728TPPv2 before 6.0.6.3, GS728TPv2 before 6.0.6.3, GS752TPPv1 before 6.0.6.3, GS752TPv2 before 6.0.6.3, MS510TXM before 1.0.2.3, and MS510TXUP before 1.0.2.3.
Patch / fix
- netgear gc108p_firmware 1.0.7.3
- netgear gc108pp_firmware 1.0.7.3
- netgear gs108t_firmware 7.0.6.3
- netgear gs110tpp_firmware 7.0.6.3
- netgear gs110tp_firmware 7.0.6.3
- netgear gs110tup_firmware 1.0.4.3
- netgear gs710tup_firmware 1.0.4.3
- netgear gs716tp_firmware 1.0.2.3
- netgear gs716tpp_firmware 1.0.2.3
- netgear gs724tpp_firmware 2.0.4.3
- netgear gs724tp_firmware 2.0.4.3
- netgear gs728tpp_firmware 6.0.6.3
- netgear gs728tp_firmware 6.0.6.3
- netgear gs752tpp_firmware 6.0.6.3
- netgear gs752tp_firmware 6.0.6.3
- netgear ms510txm_firmware 1.0.2.3
- netgear ms510txup_firmware 1.0.2.3
Exploit prediction
7.86% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- gynvael.coldwind.pl https://gynvael.coldwind.pl/?lang=en&id=733 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:U/UI:N |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
-
gynvael.coldwind.pl
/?lang=en&id=733
exploit, third-party-advisory
-
kb.netgear.com
/000063641/Security-Advisory-for-Pre-Authentication-Command-Injection-Vulnerability-on-Some-Smart-Switches-PSV
vendor-advisory
Sources
- CVE List CVE-2021-33514
- NVD CVE-2021-33514
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