CVE-2024-32937: Grandstream GXP2135 · OS Command Injection
Affects Grandstream GXP2135Source CVE Database V5
Not known to be exploited · 26% EPSS · CVSS 8.1 High.
Data as of 26 Oct 2026, 06:26 UTC
- EPSS
- 26.9% chance of exploitation in 30 days – higher than 98% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 3 Jul 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Grandstream GXP2135 | Affected
| Fixed in– |
AI-suggested
1. Immediately isolate affected Grandstream GXP2135 devices from untrusted or public networks, restricting access to trusted management networks only. 2. Implement strict network segmentation and firewall rules to limit CWMP protocol exposure and block unauthorized traffic to the devices. 3. Monitor network traffic for anomalous packets targeting the CWMP SelfDefinedTimeZone functionality, using IDS/IPS signatures or custom detection rules. 4. Engage with Grandstream support channels to obtain firmware updates or patches as soon as they become available; prioritize patch deployment in telephony infrastructure. 5. Where patching is delayed, consider temporary device replacement or disabling vulnerable features if feasible. 6. Conduct thorough inventory and risk assessment of all deployed Grandstream devices to identify and remediate vulnerable versions. 7. Enhance logging and alerting on telephony devices to detect potential exploitation attempts. 8. Educate IT and security teams about the vulnerability specifics to improve incident response readiness. 9. Review and update incident response plans to include scenarios involving telephony device compromise. 10. Consider deploying network-level application gateways or SBCs (Session Border Controllers) that can provide additional filtering and security controls for VoIP traffic.
Description
An os command injection vulnerability exists in the CWMP SelfDefinedTimeZone functionality of Grandstream GXP2135 1.0.9.129, 1.0.11.74 and 1.0.11.79. A specially crafted network packet can lead to arbitrary command execution. An attacker can send a sequence of malicious packets to trigger this vulnerability.