CVE-2017-8804: gnu glibc Deserialization of Untrusted Data
Vulnerability summary
CVE-2017-8804 is a high (CVSS 7.8) Deserialization of Untrusted Data vulnerability in gnu glibc. EPSS estimates a 7.67% chance of exploitation in the next 30 days, higher than 94.5% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 8% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3 · Related 2Timeline
- 07-05-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The xdr_bytes and xdr_string functions in the GNU C Library (aka glibc or libc6) 2.25 mishandle failures of buffer deserialization, which allows remote attackers to cause a denial of service (virtual memory allocation, or memory consumption if an overcommit setting is not used) via a crafted UDP packet to port 111, a related issue to CVE-2017-8779. NOTE: [Information provided from upstream and references
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
7.67%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
No change 0.00 pp
From 7.67% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Gnu1 product
- glibc2.25
1 vendor · 1 product
References
11 links- sourceware.org/legacy-ml/libc-alpha/2017-05/msg00128.htmlX Refsource MISC
- sourceware.org/legacy-ml/libc-alpha/2017-05/msg00129.htmlX Refsource MISC
Show all 11 references
- seclists.org/oss-sec/2017/q2/228X Refsource MISC