CVE-2018-5207
CVE-2018-5207 is a high-severity vulnerability in Irssi with a CVSS 3.x base score of 7.5. 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-134.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 2% (77th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-134
- Affected product: Irssi
- Published:
- Last modified:
Description
When using an incomplete variable argument, Irssi before 1.0.6 may access data beyond the end of the string.
Frequently asked questions
- What is CVE-2018-5207?
- When using an incomplete variable argument, Irssi before 1.0.6 may access data beyond the end of the string.
- How severe is CVE-2018-5207?
- CVE-2018-5207 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2018-5207 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-5207?
- CVE-2018-5207 primarily affects Irssi. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2018-5207?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2018-5207 published?
- CVE-2018-5207 was published on 2018-01-06 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:a:irssi:irssi:*:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
More vulnerabilities in Irssi
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- CVE-2018-7054 — Critical (CVSS 9.8): An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. There is a use-after-free when a server is…
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- CVE-2018-5208 — Critical (CVSS 9.8): In Irssi before 1.0.6, a calculation error in the completion code could cause a heap buffer overflow when completing…
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- CVE-2011-1568 — Critical (CVSS 10.0): Format string vulnerability in the logText function in shmemmgr9.dll in IGSSdataServer.exe 9.00.00.11074, and…
- CVE-2010-4235 — Critical (CVSS 10.0): Format string vulnerability in RealNetworks Helix Server 12.x, 13.x, and 14.x before 14.2, and Helix Mobile Server…
- CVE-2011-0270 — Critical (CVSS 10.0): Format string vulnerability in nnmRptConfig.exe in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53 allows…