How severe is CVE-2017-8779?

CVE-2017-8779 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 none, integrity none, and availability high.

Is CVE-2017-8779 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 82% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8779?

CVE-2017-8779 primarily affects Rpcbind Project Rpcbind. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-8779?

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-2017-8779 published?

CVE-2017-8779 was published on 2017-05-04 and last updated on 2026-06-17.

CVE-2017-8779

CVE-2017-8779 is a high-severity vulnerability in Rpcbind Project Rpcbind with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 82% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 82% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Rpcbind Project Rpcbind
Published: 2017-05-04
Last modified: 2026-06-17

Description

rpcbind through 0.2.4, LIBTIRPC through 1.0.1 and 1.0.2-rc through 1.0.2-rc3, and NTIRPC through 1.4.3 do not consider the maximum RPC data size during memory allocation for XDR strings, which allows remote attackers to cause a denial of service (memory consumption with no subsequent free) via a crafted UDP packet to port 111, aka rpcbomb.

Frequently asked questions

What is CVE-2017-8779?: rpcbind through 0.2.4, LIBTIRPC through 1.0.1 and 1.0.2-rc through 1.0.2-rc3, and NTIRPC through 1.4.3 do not consider the maximum RPC data size during memory allocation for XDR strings, which allows remote attackers to cause a denial of service (memory consumption with no subsequent free) via a crafted UDP packet to port 111, aka rpcbomb.
How severe is CVE-2017-8779?: CVE-2017-8779 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 none, integrity none, and availability high.
Is CVE-2017-8779 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 82% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8779?: CVE-2017-8779 primarily affects Rpcbind Project Rpcbind. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-8779?: 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-2017-8779 published?: CVE-2017-8779 was published on 2017-05-04 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:rpcbind_project:rpcbind:*:*:*:*:*:*:*:*
cpe:2.3:a:libtirpc_project:libtirpc:*:*:*:*:*:*:*:*
cpe:2.3:a:ntirpc_project:ntirpc:*:*:*:*:*:*:*:*

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