CVE-2021-23856
CVE-2021-23856 is a critical-severity vulnerability in Bosch Rexroth Indramotion Mlc L20 Firmware with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Critical (CVSS 3.x base score 10.0)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (45th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Bosch Rexroth Indramotion Mlc L20 Firmware
- Published:
- Last modified:
Description
The web server is vulnerable to reflected XSS and therefore an attacker might be able to execute scripts on a client’s computer by sending the client a manipulated URL.
Frequently asked questions
- What is CVE-2021-23856?
- The web server is vulnerable to reflected XSS and therefore an attacker might be able to execute scripts on a client’s computer by sending the client a manipulated URL.
- How severe is CVE-2021-23856?
- CVE-2021-23856 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-23856 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-23856?
- CVE-2021-23856 primarily affects Bosch Rexroth Indramotion Mlc L20 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-23856?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-23856 published?
- CVE-2021-23856 was published on 2021-10-04 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:o:bosch:rexroth_indramotion_mlc_l20_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:bosch:rexroth_indramotion_mlc_l40_firmware:-:*:*:*:*:*:*:*
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All CVEs affecting Bosch Rexroth Indramotion Mlc L20 Firmware →
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