Various Lexmark devices have a Buffer Overflow (issue 2 of 2).
- Published
- Jun 28, 2019
- Updated
- Jun 16, 2026
- EPSS
- 1.2% · 67th percentile
- CWE
- CWE-119
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Report tools
Action score
39
Monitor
Low priority for now.
- CVSS
- 39 / 40 · 9.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.2%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| lexmark | cx82x firmware | cpe:2.3:o:lexmark:cx82x_firmware |
| lexmark | cx82x | cpe:2.3:h:lexmark:cx82x |
| lexmark | cx860 firmware | cpe:2.3:o:lexmark:cx860_firmware |
| lexmark | cx860 | cpe:2.3:h:lexmark:cx860 |
| lexmark | xc6152 firmware | cpe:2.3:o:lexmark:xc6152_firmware |
| lexmark | xc6152 | cpe:2.3:h:lexmark:xc6152 |
| lexmark | xc8155 firmware | cpe:2.3:o:lexmark:xc8155_firmware |
| lexmark | xc8155 | cpe:2.3:h:lexmark:xc8155 |
| lexmark | xc8160 firmware | cpe:2.3:o:lexmark:xc8160_firmware |
| lexmark | xc8160 | cpe:2.3:h:lexmark:xc8160 |
| lexmark | cx72x firmware | cpe:2.3:o:lexmark:cx72x_firmware |
| lexmark | cx72x | cpe:2.3:h:lexmark:cx72x |
and 56 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- lexmark cx421 firmwareup to cxnzj.052.024 inclusive
- lexmark cx421 firmwarecxnzj.052.200 and later · up to cxnzj.052.204 inclusive
- lexmark cx522 firmwareup to cxtzj.052.024 inclusive
- lexmark cx522 firmwarecxtzj.052.200 and later · up to cxtzj.052.204 inclusive
- lexmark cx62x firmwarecxtzj.052.200 and later · up to cxtzj.052.204 inclusive
- lexmark cx62x firmwareup to cxtzj.052.024 inclusive
- lexmark cx72x firmwarecxtat.052.200 and later · up to cxtat.052.204 inclusive
- lexmark cx72x firmwareup to cxtat.052.024 inclusive
- lexmark cx82x firmwarecxtpp.052.200 and later · up to cxtpp.052.204 inclusive
- lexmark cx82x firmwareup to cxtpp.052.024 inclusive
- lexmark cx860 firmwarecxtpp.052.200 and later · up to cxtpp.052.204 inclusive
- lexmark cx860 firmwareup to cxtpp.052.024 inclusive
- lexmark cx92x firmwareup to cxtmh.052.024 inclusive
- lexmark cx92x firmwarecxtmh.052.200 and later · up to cxtmh.052.204 inclusive
- lexmark mb2338 firmwaremxngm.052.200 and later · up to mxngm.052.204 inclusive
- lexmark mb2338 firmwareup to mxngm.052.024 inclusive
- lexmark mb2442 firmwaremxtgm.052.200 and later · up to mxtgm.052.204 inclusive
- lexmark mb2442 firmwareup to mxtgm.052.024 inclusive
- lexmark mb2546 firmwaremxtgm.052.200 and later · up to mxtgm.052.204 inclusive
- lexmark mb2546 firmwareup to mxtgm.052.024 inclusive
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.