How severe is CVE-2023-23560?

CVE-2023-23560 has a CVSS 3.x base score of 9.8, 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-2023-23560 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-23560?

CVE-2023-23560 primarily affects Lexmark B2236 Firmware. In total, 128 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-23560?

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-2023-23560 published?

CVE-2023-23560 was published on 2023-01-23 and last updated on 2026-06-17.

CVE-2023-23560

CVE-2023-23560 is a critical-severity vulnerability in Lexmark B2236 Firmware with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 15% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 15% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Lexmark B2236 Firmware
Published: 2023-01-23
Last modified: 2026-06-17

Description

In certain Lexmark products through 2023-01-12, SSRF can occur because of a lack of input validation.

Frequently asked questions

What is CVE-2023-23560?: In certain Lexmark products through 2023-01-12, SSRF can occur because of a lack of input validation.
How severe is CVE-2023-23560?: CVE-2023-23560 has a CVSS 3.x base score of 9.8, 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-2023-23560 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-23560?: CVE-2023-23560 primarily affects Lexmark B2236 Firmware. In total, 128 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-23560?: 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-2023-23560 published?: CVE-2023-23560 was published on 2023-01-23 and last updated on 2026-06-17.

References

Affected products (128)

cpe:2.3:o:lexmark:b2236_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:b2338_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:b2442_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:b2546_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:b2650_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:b2865_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:b3340_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:b3442_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:c2240_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:c2325_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:c2326_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:c2425_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:c2535_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:c3224_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:c3326_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:c3426_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:c4150_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:c6160_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:c9235_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs331_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs421_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs431_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs439_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs521_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs622_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs720_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs725_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs727_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs728_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs820_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs827_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs921_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs923_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cs927_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cx331_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cx421_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cx431_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cx522_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cx622_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lexmark:cx625_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Lexmark B2236 Firmware

CVE-2021-44735 — Critical (CVSS 9.8): Embedded web server command injection vulnerability in Lexmark devices through 2021-12-07.
CVE-2021-44734 — Critical (CVSS 9.8): Embedded web server input sanitization vulnerability in Lexmark devices through 2021-12-07, which can which can lead to…
CVE-2021-44738 — Critical (CVSS 9.8): Buffer overflow vulnerability has been identified in Lexmark devices through 2021-12-07 in postscript interpreter.
CVE-2021-44737 — High (CVSS 8.8): PJL directory traversal vulnerability in Lexmark devices through 2021-12-07 that can be leveraged to overwrite internal…
CVE-2022-29850 — High (CVSS 8.1): Various Lexmark products through 2022-04-27 allow an attacker who has already compromised an affected Lexmark device to…
CVE-2023-22960 — High (CVSS 7.5): Lexmark products through 2023-01-10 have Improper Control of Interaction Frequency.

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