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CVE-2026-59250

Classic buffer overflow in the Erlang/OTP megaco flex scanner C driver allows a remote unauthenticated attacker to corrupt the driver's memory (and potentially achieve remote code execution or a denial-of-service crash) by sending a single text-encoded H.248/Megaco message containing an oversized property parm name. When tokenizing a Local/Remote descriptor, mfs_load_property_groups extracts the attacker-controlled property name (bounded only by the message length) and, when no value follows, f
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:de17b1e5f8040bab947aa8a8dc95d206bc5082502b430a1539eeca9f0fa66500
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["megaco_flex_scanner","megaco_flex_scanner_drv"],"packageName":"erlang/otp","packageURL":"pkg:github/erlang/otp","product":"OTP","programFiles":["lib/megaco/src/flex/megaco_flex_scanner_drv.flex.src"],"programRoutines":[{"name":"mfs_load_property_groups"},{"name":"megaco_flex_scanner:scan/2"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"29.0.4","status":"unaffected"},{"at":"28.5.0.4","status":"unaffected"},{"at":"27.3…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/affected/1

{"cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["megaco_flex_scanner","megaco_flex_scanner_drv"],"packageName":"megaco","packageURL":"pkg:otp/megaco?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git","product":"OTP","programFiles":["src/flex/megaco_flex_scanner_drv.flex.src"],"programRoutines":[{"name":"mfs_load_property_groups"},{"name":"megaco_flex_scanner:scan/2"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"4.9.1","status":"unaffected"},{"…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/affected/0
cwe · 2 assertions

{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/problemTypes/0/descriptions/1

{"cweId":"CWE-120","description":"CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

2 source assertions
{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["megaco_flex_scanner","megaco_flex_scanner_drv"],"packageName":"erlang/otp","packageURL":"pkg:github/erlang/otp","product":"OTP","programFiles":["lib/megaco/src/flex/megaco_flex_scanner_drv.flex.src"],"programRoutines":[{"name":"mfs_load_property_groups"},{"name":"megaco_flex_scanner:scan/2"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"29.0.4","status":"unaffected"},{"at":"28.5.0.4","status":"unaffected"},{"at":"27.3…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/affected/1
{"cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["megaco_flex_scanner","megaco_flex_scanner_drv"],"packageName":"megaco","packageURL":"pkg:otp/megaco?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git","product":"OTP","programFiles":["src/flex/megaco_flex_scanner_drv.flex.src"],"programRoutines":[{"name":"mfs_load_property_groups"},{"name":"megaco_flex_scanner:scan/2"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"4.9.1","status":"unaffected"},{"…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":8.3,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/problemTypes/0/descriptions/1
{"cweId":"CWE-120","description":"CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-59250.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/erlang/otp/commit/8704c8f550a11ed5f825e3c011ecb03565b79c4f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/references/4
{"tags":["vendor-advisory","related"],"url":"https://github.com/erlang/otp/security/advisories/GHSA-7xgh-gmgf-q2g7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/references/0
{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-59250"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/references/2
{"tags":["x_version-scheme"],"url":"https://www.erlang.org/doc/system/versions.html#order-of-versions"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e3773b3c3a6a07e25f1aa8119ddeeec39e9c326404a14f4cbdebbd35d131f688 · sha256:a19d28eed2310684… · /containers/cna/references/3

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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